Is an ly word adverb?

No, "-ly" is not an adverb. It is a suffix that is often added to adjectives to form adverbs.

Here's how it works:

* Adjective: slow

* Adverb: slowly

The "-ly" suffix changes the word from describing a noun (adjective) to describing a verb, adjective, or another adverb (adverb).

Examples:

* Quick (adjective) -> Quickly (adverb)

* Happy (adjective) -> Happily (adverb)

* Strong (adjective) -> Strongly (adverb)

However, there are exceptions. Not all words ending in "-ly" are adverbs. Some words are simply adjectives:

* Friendly

* Silly

* Deadly

It's always best to check the context of the word to determine its function in a sentence.