Advanced … min read · Updated 2026-06-22

Adjective-to-Adverb Conversion

Most adjectives become adverbs by adding -ly. Some change spelling, and a few are irregular.

AdjectiveAdverb
quickquickly
happyhappily (y → i)
gentlegently (drop e, add y)
goodwell (irregular)
fastfast (no change)

careful → carefully

easy → easily

He is a good singer → He sings well.

Adjective + -ly = adverb. Watch the spelling: y → i (happy → happily), and "good" → well.

Common mistake: "He sings good" → "He sings well." ("Good" is an adjective; "well" is the adverb.)

✏️ Test Yourself

1. careful

2. easy

3. good

4. happy

📒 Words to learn

On the ball (Idiom)

Meaning — To be alert, attentive, and quick to respond.

“She’s really on the ball, noticing all the mistakes before anyone else.”

Rule of thumb (Idiom)

Meaning — A general principle or guideline based on practical experience.

“A good rule of thumb is to always back up your important documents.”

In the long run (Idiom)

Meaning — Over a long period of time; eventually.

“In the long run, healthy habits pay off.”

At the end of the day (Idiom)

Meaning — When everything is considered; in the final analysis.

“At the end of the day, it’s your effort that matters the most.”

Adept (Adj)

Meaning — Highly skilled or proficient at something.

“She is adept at solving complex problems.”

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