Good vs Well: The Simple Rule

Adjective vs Adverb (Plus the Health Exception)

Reviewed by the Grammarlyzer Editorial Team · Our Review Standards · Published January 22, 2026 · Updated June 13, 2026

Quick Answer

Good = adjective (describes a noun).

Well = adverb (describes a verb), and sometimes an adjective meaning healthy.

Quick test: If the word describes a thing/person, use good. If it describes an action, use well.

Memory Trick: Good describes things; well describes actions and health.

πŸ”‘ Key Takeaway

Use good for nouns (a good plan). Use well for verbs (performed well). Use well for health (I feel well).

Quick Comparison

Form Use It For Quick Check
Good adjective (describes a noun) It follows a linking verb or sits before a noun: a good plan, looks good.
Well adverb (describes a verb); also an adjective meaning healthy It tells how an action is done: sang well β€” or means healthy: feel well.

Fast Decision Table

The whole choice turns on one question: is the verb an action verb or a linking verb?

What the word describes Choose Example
A noun, directly or after a linking verb (be, seem, look, taste, smell) good a good report; the soup tastes good
How an action verb is performed (sing, run, write, do) well she sings well; the team did well
Physical health (the adjective meaning "not sick") well (exception) I feel well again after the flu
Mood or general well-being good I feel good about the launch

Common Mistakes

❌ Incorrect:

She sings really good.

βœ“ Correct:

She sings really well.

Sings is an action verb, so it needs the adverb well to describe how she sings.
❌ Incorrect:

I did good on the test.

βœ“ Correct:

I did well on the test.

Did is an action verb here, so use well. Did good would mean you performed charitable acts β€” a different meaning entirely.
❌ Incorrect:

The soup tastes well.

βœ“ Correct:

The soup tastes good.

This is the classic overcorrection. Tastes is a linking verb describing the soup, not an action, so it takes the adjective good. Tastes well would mean the soup has a good sense of taste.
❌ Incorrect:

He plays guitar good.

βœ“ Correct:

He plays guitar well.

Plays is an action verb, so the adverb well describes how he plays.
❌ Incorrect:

After the surgery she looked good, fully recovered.

βœ“ Correct:

After the surgery she looked well, fully recovered.

When the meaning is specifically healthy, well is the adjective to use. Looked good would describe her appearance, not her health β€” both are valid, but they say different things.

🎯 Test Your Knowledge

1. The new hire writes ___ under deadline pressure.

2. That fresh bread smells ___.

3. I finally feel ___ after a week with the flu.

4. She has a ___ reason for changing the plan.

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The correct version is: She sings really well..

Honest limits: the engine reliably catches spelling, agreement, and punctuation, but choosing between Good and Well depends on meaning. The checker is a fast second pass—the decision stays with you.

Frequently Asked Questions

What is the difference between Good and Well?

Good is an adjective that describes a noun (a good plan). Well is an adverb that describes a verb (she writes well), and it is also an adjective meaning healthy (I feel well). Quick test: if the word describes a thing or person, use good; if it describes how an action is done, use well.

Is it correct to answer 'Good' when someone asks 'How are you?'

In casual speech, yes β€” Good, thanks is widely accepted. Strictly, How are you? invites an adverb of manner, so Well, thanks is the traditionally correct reply. Both are understood, but well is safer in formal settings.

Is 'I'm good' correct?

Yes, in casual conversation. I'm good is standard spoken English for declining or saying you are fine. In formal writing, I'm well or I'm doing well is the safer choice.

Feel good or feel well β€” which is right?

Both are correct but mean different things. I feel well refers to physical health. I feel good refers to mood, energy, or general well-being. A doctor wants to hear I feel well; a friend usually means I feel good.

Is 'doing good' wrong?

It depends on meaning. Doing well means succeeding or being healthy. Doing good means performing charitable or virtuous acts. If you mean success, use doing well.

Good or well after smell, taste, and look?

Use good. Smell, taste, look, and feel are linking verbs here, so they take the adjective: the soup tastes good, the plan looks good. Saying the soup tastes well is an overcorrection and is wrong.

Does 'I hope this email finds you well' use the right word?

Yes. Here well is the adjective meaning healthy and in good spirits, so the phrase is correct and standard in business email. Finds you good would be wrong because the sentence refers to your state of health, not an action.

Word Origins & Etymology

Good comes from Old English 'gōd,' from Proto-Germanic '*gōdaz.' It has always been an adjective β€” it describes nouns (a good book, good weather).

Well derives from Old English 'wel' (in a good manner), from Proto-Germanic '*wel.' It functions as an adverb β€” it describes verbs (she sings well).

πŸ”— The Connection

Good and well are the adjective/adverb pair, similar to quick/quickly or slow/slowly. The complication: 'well' is also an adjective when referring to health ('I feel well'), blurring the line.

Real-World Examples

πŸ’Ό Business:

The presentation went really well β€” the client was impressed.

Well = adverb (how it went)
πŸ’Ό Business:

That's a good idea β€” let's explore it further.

Good = adjective (describes the idea)
πŸŽ“ Academic:

Students who sleep well perform better on exams.

Well = adverb (modifies 'sleep')
πŸ—£οΈ Daily:

She plays piano really well.

Well = adverb (how she plays)
πŸ—£οΈ Daily:

This soup tastes good!

Good = adjective (after linking verb 'tastes')
πŸ’Š Health:

I don't feel well today β€” I think I'm coming down with something.

Well = adjective (health exception)
❌ Common Mistake:

She did good on the exam.

Wrong in formal English: should be 'well' (adverb modifying 'did'). 'Did good' is common in casual speech but not standard grammar.
❌ Common Mistake:

The food smells well.

Wrong: should be 'good.' After linking verbs (smells, tastes, looks), use the adjective 'good,' not the adverb 'well' (unless describing the subject's ability to smell).
πŸ’‘ Linking Verbs:

The plan looks good. (not 'well' β€” 'looks' is a linking verb here)

After linking verbs (be, seem, look, taste, smell, feel), use the adjective 'good.'
πŸ’‘ Action Verbs:

The team performed well under pressure. (not 'good')

After action verbs (performed, ran, spoke), use the adverb 'well.'

Why Do People Confuse Them?

Two factors create the confusion. First, 'well' serves double duty as both an adverb (she sings well) and an adjective (she feels well), which breaks the tidy good=adjective/well=adverb rule. Second, the phrase 'I'm doing good' has become so widespread in casual American English that it sounds natural to many speakers, although 'I'm doing well' remains the standard form. Superman's 'I'm here to do good' (help people) vs 'I'm here to do well' (succeed) illustrates the semantic difference clearly.

For more practice, see Your vs You’re and Their vs There vs They’re.

Related Articles

Linking Verbs: The Core Concept for Mastering Good vs Well

The most reliable way to get good vs. well right in every sentence is to understand linking verbs. A linking verb connects a subject to a describing word (an adjective) rather than expressing an action. Linking verbs take good, not well. Action verbs take well, not good.

Common linking verbs that take "good"

The following verbs are always or often linking verbs: be (is, are, was, were), seem, appear, become, feel (when describing a state), look (when describing appearance), smell, taste, sound. After these verbs, use good.

  • The plan sounds good to me. (linking verb: sounds)
  • The new design looks good. (linking verb: looks)
  • The coffee smells good. (linking verb: smells)
  • His explanation seemed good at the time. (linking verb: seemed)
  • The food tastes good. (linking verb: tastes)

The "feel" complication

Feel is the linking verb that creates the most confusion with good vs. well. When feel describes a mental or emotional state, it is a linking verb and takes good: "I feel good about this decision." When feel refers specifically to physical health, well is used as an adjective meaning "not ill": "I finally feel well after the flu." Both are correct, but they mean different things. A doctor asking about your physical recovery wants to hear "I feel well." A friend asking about your confidence wants to hear "I feel good."

Verbs that can be either linking or action

Some verbs shift meaning depending on context. Look can be a linking verb (look good = appear good) or an action verb (look carefully at something = use your eyes). Feel can describe a state (linking) or a physical action (feeling the texture of something = action verb). When these verbs are used as action verbs, they take well: "She felt carefully along the wall for the light switch, and she could feel the surface well." In practice, the action-verb use of these verbs is far less common than the linking-verb use, so the default for look, feel, smell, taste, and sound is almost always the linking pattern β€” use good.

Good vs Well in Professional Writing Contexts

Performance reviews and feedback

Performance contexts make the good/well distinction clearly visible. "She is a good writer" (adjective describing a person) is correct. "She writes well" (adverb describing the action of writing) is also correct. "She writes good" is incorrect β€” writes is an action verb and requires the adverb well. In written feedback that may be kept on record, the error is noticeable. Use "performed well," "communicates well," "organizes information well" for actions, and "a good communicator," "a good collaborator" for noun phrases.

Business correspondence

Two common phrases cause errors in professional email. "I hope this email finds you well" is correct and standard β€” well is an adjective meaning healthy and in good spirits. "The meeting went well" is correct β€” well is an adverb describing how the meeting went. "The meeting went good" is the error to watch for. Similarly: "The project is going well" (correct), "I think you did well on the presentation" (correct).

Academic and formal writing

In formal prose, "good" used as an adverb ("she writes good," "they did good") is consistently flagged as nonstandard. The rule is enforced strictly in academic journals, legal documents, and formal reports. Use action-verb constructions with well: "The data supports this conclusion well," "The framework applies well across different contexts," "The subjects performed well on both tasks."

When "good" as an adverb is acceptable

In casual conversation, "I'm doing good," "things are going good," and "she sings pretty good" are understood and not socially marked as errors. These are common in American spoken English. The line is formal writing β€” in any document that will be edited or published, use well as the adverb. Reserve this judgment call for spoken contexts where naturalness matters more than prescriptive correctness.

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