Good, Well, Bad, and Badly
Four common adjectives and adverbs have irregular forms: good, well, bad, and badly.
Forming Irregular Comparatives and Superlatives
| COMPARATIVE | SUPERLATIVE | |
|---|---|---|
| ADJECTIVE | ||
| good | better | best |
| bad | worse | worst |
| ADVERB | ||
| well | better | best |
| badly | worse | worst |
People often get confused about whether to use good or well. Good is an adjective, so use it to describe a noun or pronoun. Well is an adverb, so use it to describe a verb or an adjective.
| ADJECTIVE | 
|
| ADVERB | 
|
Well can also be an adjective to describe someone’s health: I am not well today.