Good vs Well Usage Examples: Rules and Quick Tests

Good and well differ mainly by grammatical function: good is usually an adjective that describes a noun or follows a linking verb, while well is usually an adverb that describes an action. Well is also an adjective meaning healthy, so “She writes well,” “She is a good writer,” and “She feels well” are all correct for different reasons.

Key Facts at a Glance

• Good normally modifies a noun: “They bought a good camera.”
• Well normally modifies an action verb: “They used the camera well.”
• Good follows a linking verb when it describes the subject: “The camera looks good.”
• Well means healthy after verbs such as “feel,” “be,” and “get”: “He feels well.”
• “I feel good” describes emotion or general well-being, while “I feel well” traditionally describes physical health.
• A compound modifier before a noun often uses well before a past participle: “a well-designed plan.”

What Is the Difference Between Good and Well?

The difference between good and well is the difference between describing a thing and describing an action, with one important health-related exception. “Good” is an adjective, as in “a good answer,” whereas “well” is an adverb, as in “the student answered well.”

A useful grammar test is to identify the word being modified. If the target is a noun, use good. If the target is an action verb, use well. The distinction becomes less obvious after linking verbs because linking verbs connect a subject with a description rather than expressing an action.

Sentence	Word modified	Correct word	Reason
She is a good editor.	editor, a noun	good	Adjective modifies a noun
She edits well.	edits, an action	well	Adverb modifies a verb
The plan sounds good.	plan, the subject	good	“Sounds” is linking here
The patient feels well.	patient’s health	well	“Well” means healthy

The rule is reliable for formal writing, but everyday speech often uses “good” in places where traditional grammar recommends “well.” Editors generally preserve well in formal prose while allowing natural dialogue to reflect ordinary speech.

When Should You Use Good?

Use good before a noun or after a linking verb when the word describes a person, object, condition, judgment, or quality. Examples include “a good teacher,” “good advice,” “The result is good,” and “The flowers smell good.”

Good Before a Noun

Good modifies a noun directly when it appears before that noun. The noun can be concrete, abstract, singular, plural, countable, or uncountable.

• We found a good restaurant near the station.
• Maya gave me good advice.
• The company made a good decision.
• He is a good listener.
• That was a good explanation of the rule.
• The laboratory needs good equipment.

“Good” does not tell readers exactly why something has value. In professional or academic writing, replace it with a more precise adjective when the evidence permits.

Vague phrase	More precise alternative	Meaning added
a good result	a reliable result	The result can be reproduced
a good explanation	a clear explanation	The explanation is easy to understand
a good product	a durable product	The product lasts
a good argument	a well-supported argument	Evidence supports the reasoning
a good salary	a competitive salary	Pay compares favorably with a market

Good After a Linking Verb

Use good after a linking verb when the word describes the subject rather than the manner of an action. Common linking verbs include be, seem, appear, become, remain, look, sound, smell, taste, and feel.

• The proposal seems good.
• Your idea sounds good.
• The bread smells good.
• This curry tastes good.
• The fabric feels good.
• Her new haircut looks good.

The verb can change function according to context. “The soup tastes good” describes the soup’s flavor, but “The chef tastes the soup carefully” describes the chef’s action. The first sentence needs good; the second needs an adverb such as carefully, not well.

When Should You Use Well?

Use well when it modifies an action verb, or when it means healthy. “Well” can also intensify an adjective or another adverb, as in “well prepared” and “well below average.”

Well After an Action Verb

Well describes how someone performs an action. It commonly follows verbs such as write, speak, work, perform, drive, cook, listen, run, and behave.

• The student writes well.
• Our driver drove well in heavy rain.
• The machine runs well.
• She speaks Spanish well.
• The team worked well under pressure.
• The nurse handled the emergency well.

The adverb applies to the performance, not necessarily to the person or object. “He plays well” means he performs the activity skillfully. It does not automatically mean he is a good person, owns a good instrument, or plays a good game.

Well Meaning Healthy

Well functions as an adjective when it means physically healthy or recovered from illness. This use commonly follows be, feel, look, or get.

• Are you well after the operation?
• I do not feel well today.
• Her son is well again.
• The doctor asked whether he was getting well.
• She looks well after several weeks of rest.

The health meaning explains why “I feel well” is grammatical even though feel is followed by an adjective. “Well” is not acting as an adverb in that sentence.

Good vs Well Usage Examples

The following examples show the central contrast across common sentence patterns. Each sentence is correct because the selected word matches the grammatical role or intended meaning.

Correct example	What it means	Incorrect or different version
She is a good writer.	Her quality as a writer is high.	She is a well writer.
She writes well.	Her writing is skillful.	She writes good.
The engine sounds good.	The engine seems to be in good condition.	The engine sounds well.
The mechanic tested it well.	The mechanic performed a thorough test.	The mechanic tested it good.
I feel good about the interview.	I feel confident or positive.	I feel well about the interview.
I feel well after treatment.	I am physically healthy.	I feel good, which may also be acceptable but is less specific.
They did well on the exam.	Their performance was successful.	They did good in formal edited prose.
They did good for the community.	They performed a charitable or beneficial act.	They did well for the community, which has a different meaning.

Is “I Feel Good” or “I Feel Well” Correct?

Both “I feel good” and “I feel well” are correct, but they usually communicate different meanings. “I feel good” describes an emotion, attitude, or general positive state, while “I feel well” traditionally means “I am healthy” or “I am not ill.”

• I feel good about accepting the offer.
• I feel well enough to return to work.
• The athlete feels good after scoring.
• The athlete feels well after recovering from the flu.

In contemporary English, “I feel good” can also mean “I feel healthy,” especially in conversation. Formal writing may use “I feel well” when physical health is the intended meaning, but the context determines whether the distinction matters.

How Do Linking Verbs Change the Choice?

A linking verb takes good when it connects the subject to a quality, condition, or identity; an action use takes well or another adverb. The same verb may require different words in different sentences because meaning, not the verb’s spelling alone, determines its function.

Verb	Linking-verb example	Action-verb example
look	The painting looks good.	She looked carefully at the painting.
smell	The bread smells good.	The dog smelled the bread carefully.
taste	The sauce tastes good.	The chef tasted the sauce professionally.
feel	The blanket feels good.	She felt the fabric gently.
sound	The proposal sounds good.	The alarm sounded loudly.

A practical substitution test helps. If you can replace the verb with is without changing the basic meaning, the verb is probably linking: “The soup tastes good” becomes “The soup is good.” If the sentence describes an intentional activity, use an adverb: “The dog smells the food well” describes successful sniffing.

Is “Doing Good” or “Doing Well” Correct?

“Doing well” means performing successfully or being in good health, while “doing good” means producing beneficial results or helping others. “I am doing well” is the standard response to “How are you?” in formal or edited English.

• How are you? I’m doing well, thank you.
• The business is doing well this quarter.
• She is doing well in mathematics.
• The nonprofit is doing good in rural communities.
• He spends weekends doing good through food donations.

“Doing good” is also common in informal speech as a substitute for “doing well.” The phrase is widely understood, but it can create ambiguity in writing because it may refer either to performance or to charitable action.

Expression	Primary meaning	Example
doing well	Performing successfully	The project is doing well
doing good	Helping or benefiting others	The charity is doing good
did well	Achieved a strong result	She did well on the test
did good	Performed a beneficial act	He did good by donating
good deed	A helpful act	Volunteering was a good deed

Why Is “Well-Written” Correct?

Well-written is correct because well modifies the past participle written inside a compound adjective. The complete compound then modifies a noun, as in “a well-written article,” “a well-organized meeting,” or “a well-designed website.”

Common examples include:

• a well-written report
• a well-researched paper
• a well-known author
• a well-trained technician
• a well-funded program
• a well-made product
• a well-behaved child
• a well-balanced meal

The hyphen is normally used when the compound appears before a noun: “a well-written report.” When the phrase follows the noun, many style guides omit the hyphen: “The report is well written.” The compound structure is different from “a good report,” where good directly modifies the noun.

Can Well Modify Adjectives and Adverbs?

Well can modify an adjective or adverb when it means “thoroughly,” “to a considerable degree,” or “by a large margin.” This use is distinct from the ordinary adverb meaning “in a skillful manner.”

• The proposal is well worth reviewing.
• The train arrived well before noon.
• The replacement part is well below the listed price.
• She is well aware of the deadline.
• The instructions are well enough explained.
• The two offices are well within walking distance.

In “well aware,” well strengthens the adjective aware. In “well below,” it strengthens the adverb or preposition phrase indicating distance from a level. Replacing well with good produces an error: “good aware” and “good below” are not standard forms.

When Is Good Used as a Noun?

Good can function as a noun meaning benefit, advantage, moral value, or a person’s welfare. The noun use appears in expressions such as for the good of, do good, the common good, and goods meaning merchandise.

• The policy was created for the good of residents.
• The volunteers worked for the common good.
• The medicine did more good than harm.
• The store sells household goods.
• She wants to do good in her community.

This noun use explains why “do good” is not always a mistake. A writer should decide whether good means “successfully” or “beneficially,” then choose the expression that communicates that meaning.

What Are the Most Common Mistakes?

The most common errors occur when writers treat good as a general-purpose replacement for well, or when they assume every verb of perception is automatically linking. Meaning, register, and sentence structure must be checked together.

1. Writing “She sings good.”
   Use “She sings well” in formal English because well modifies the action sings.
2. Writing “The cake tastes well.”
   Use “The cake tastes good” when describing flavor. Use “The chef tastes the cake carefully” when describing the chef’s action.
3. Writing “He is a well student.”
   Use “He is a good student.” Use “He is a well student” only in a highly unusual context where “well” modifies a different noun phrase, which standard English normally avoids.
4. Writing “a good-written report.”
   Use “a well-written report.” Well combines with the past participle written.
5. Assuming “I feel good” is always wrong.
   “I feel good about the decision” is standard because good describes an emotional state.
6. Overcorrecting every informal phrase.
   “You did good, kid” can be appropriate in dialogue. A formal report should use “You performed well” or “You achieved a strong result.”

What Should You Use in Formal Writing?

Use well after an action verb, but replace vague forms with a precise adverb when the sentence supports one. Use good before nouns and after linking verbs, then specify the quality with evidence where possible.

General phrase	Formal revision	Suitable context
The system works well.	The system operates reliably.	Engineering or technical report
She explains it well.	She explains it clearly.	Teaching evaluation
The project did well.	The project met 94% of its targets.	Business report
He is a good manager.	He reduced staff turnover by 12%.	Performance review
The product is good.	The product passed three durability tests.	Product assessment

The words efficiently, accurately, clearly, reliably, effectively, successfully, and thoroughly often provide more information than well. The words durable, useful, ethical, accurate, persuasive, affordable, and effective often provide more information than good.

Expert Editing Rule

Do not edit mechanically by replacing every good with well. First identify the modified word, then ask whether a specific alternative communicates the measurable quality, manner, or outcome more accurately.

What Are Better Alternatives to Good and Well?

Better alternatives depend on the meaning the writer intends. Good may mean effective, enjoyable, ethical, attractive, or high-quality; well may mean skillfully, successfully, thoroughly, or healthily.

Intended meaning	Alternative for good	Alternative for well
High quality	excellent, superior	expertly
Successful	effective, successful	successfully
Easy to understand	clear, coherent	clearly
Morally positive	ethical, honorable	responsibly
Pleasant	enjoyable, appealing	pleasantly
Healthy	healthy, fit	healthily, though often rephrased
Accurate	correct, precise	accurately
Strong performance	capable, accomplished	skillfully

A precise substitute can also prevent ambiguity. “The patient is good” might describe character, behavior, or health. “The patient is healthy” identifies the medical meaning immediately.

A Five-Step Test for Good or Well

Use the following diagnostic when a sentence feels uncertain. The process takes less than 10 seconds once practiced.

1. Find the target word.
   Determine whether good or well describes a noun, verb, adjective, or the subject’s health.
2. Check for an action verb.
   If the word describes how an action happens, choose well: “They negotiated well.”
3. Check for a noun.
   If the word directly describes a person, object, or idea, choose good: “They reached a good agreement.”
4. Check for a linking verb.
   If a verb connects the subject with a quality, choose good: “The agreement sounds good.”
5. Check for physical health.
   If the intended meaning is healthy or recovered, choose well: “The patient is well.”

The final meaning check matters most. “The child looks good” describes appearance. “The child looks well” traditionally suggests healthy appearance, although contemporary speakers may use both.

Good vs Well: Quick Reference Table

Situation	Preferred form	Example
Before a noun	good	a good solution
After “be” with a quality	good	The solution is good
After an action verb	well	She solved it well
Physical health	well	He is well
Positive emotion	good	I feel good
Compound before a noun	well + participle	a well-planned trip
Charitable action	good	They do good
Successful performance	well	They performed well

FAQ

Is “He plays good” ever acceptable?

“He plays good” occurs in informal speech and some dialects, but “He plays well” is the standard choice in formal writing. The adverb well modifies the action plays. If “good” modifies a noun instead, write “He plays good music,” where good describes the noun music.

Is “She looks well” or “She looks good” better?

“She looks good” usually describes appearance, clothing, or attractiveness. “She looks well” traditionally means she appears healthy. Modern speakers sometimes use “looks well” for appearance, but the health interpretation remains common, especially in careful or medical contexts.

Is “goodly” the adverb form of good?

No. Goodly is a rare adjective meaning considerable or abundant, as in “a goodly number,” rather than the normal adverbial form of good. The standard adverb used for skillful or successful action is well: “The team performed well.”

Why do people say “I’m good” instead of “I’m well”?

“I’m good” is common in conversation and can mean “I’m fine,” “I’m satisfied,” or “I do not need anything.” “I’m well” more specifically means “I’m healthy.” In formal contexts, choose the phrase that matches the intended meaning rather than treating one as universally correct.

Is “as well as” related to the good versus well rule?

“As well as” is a fixed expression meaning “in addition to” or, in some constructions, “to the same degree as.” Its use does not follow the simple good-adjective and well-adverb contrast. Examples include “She speaks French as well as Spanish” and “The fee covers meals as well as lodging.”

Can “well” begin a sentence?

Yes. At the beginning of a sentence, well can be an adverb meaning thoroughly, an adjective in a health-related phrase, or a discourse marker that introduces a response. “Well, I disagree” uses discourse-marker well, so the adjective-adverb test does not apply directly.

The Bottom Line

For good vs well usage examples, use good to describe a noun or a subject after a linking verb, and use well to describe an action or physical health. Write “a good writer,” “she writes well,” “the soup tastes good,” and “he feels well.” In formal writing, “doing well” describes performance, while “doing good” describes beneficial action.