Adjectives vs Adverbs: How to Choose the Right Word
Compare adjectives and adverbs through everyday examples, linking verbs, good and well, fast and hard, and common mistakes to avoid.
Adjectives describe people or things, while adverbs can describe how an action happens or modify other descriptions. Start by asking which word you are describing. In a careful mechanic, careful describes the person. In the mechanic works carefully, carefully describes the action. This question helps more than adding -ly to every word.
Find the word being described
An adjective often comes before a noun or after a linking verb. An adverb can add information to a verb, an adjective or another adverb. Position varies with its job. Manner adverbs often follow the verb and its object. Read the whole phrase, because a nearby word is not always the one being modified.
Watch linking verbs
After be, seem, look, feel or smell, a description of the subject commonly uses an adjective. A verb can also describe an action instead. Compare looking tired with looking carefully at a map. The first describes the person; the second explains how the person looks at something.
Learn useful exceptions
Many manner adverbs end in -ly, but some keep the adjective form, including fast and hard. Good usually becomes well when describing performance. Well can also be an adjective meaning healthy. Friendly is an adjective despite its ending; use in a friendly way when you need a manner expression.
Check meaning before spelling
Hardly means almost not, rather than with effort. An extra ending can therefore change your message. When reviewing a paragraph, underline each describing word and draw an arrow to what it modifies. Then check meaning and form. Practise with your own everyday routines so the distinction becomes useful beyond gap-fill exercises.
Original examples
A thing and an action
It is a quiet room. We speak quietly in it.
A linking verb and an action
The mechanic looks calm. She checks the wheel carefully.
Another description
The repair was remarkably quick. Remarkably modifies the adjective quick.
Two different meanings
He works hard. He hardly works. The second means he does almost no work.
Useful contrasts for everyday descriptions
Describe the thing or the action
“A careful explanation” describes the explanation; “explain it carefully” describes the action. The same distinction gives a quiet room and closing the door quietly.
Recognise a linking verb
“The soup smells wonderful” describes the soup. “The mechanic checks the wheel carefully” describes how an action happens.
Keep the exceptions together
“She rides fast” and “speaks English well” are ordinary adverb patterns. “Works hard” means making an effort; “hardly works” means doing almost no work.
Related guides
Meaning matters more than an ending
Adverbs without -ly
Fast and hard can function as adverbs without that ending. Adverbs also express time, place, frequency and other meanings.
Descriptions after linking verbs
When look links a subject to its appearance, happy describes the subject. An adverb can instead describe an action, as in looking carefully at a photo.
Well as a health description
It is an adverb in sings well, but can be an adjective meaning healthy in feels well.
Further reading
Cambridge Grammar: using adjectives and adverbs; Cambridge Grammar: adverb types; Cambridge Grammar: good and well. References checked on 12 October 2026. The examples, practice and teaching activities here are original. Substantive Cambridge publisher search extracts were reviewed; direct page access was unavailable.
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