What adjectives end with -ly?

Adjectives don't typically end in "-ly". "-ly" is a suffix usually used to create adverbs, which describe verbs, adjectives, or other adverbs.

For example:

* Slow (adjective) becomes slowly (adverb).

* Beautiful (adjective) becomes beautifully (adverb).

There are a few exceptions, but they are typically considered archaic or poetic in modern English. For instance:

* Early (adjective) can be used as an adverb.

* Likely (adjective) is sometimes used as an adverb, but it's generally considered more formal to use "probably."

It's best to remember that adjectives describe nouns, while adverbs describe verbs, adjectives, or other adverbs.