Slither is generally used as a verb. It could be used as a noun, as in "the snake's slither," but it is not usually used that way.
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
The part(s) of speech that has an "A" sound are: Adjective and Adverb.
All snakes slither -__-
slither
Koalas do not slither. They walk, and they climb.
The part of speech for this particular word is a noun.
part of speech
Worms crawl, snakes slither
Slither was released on 03/31/2006.
The Production Budget for Slither was $15,250,000.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The sly man walks with a certain slither about him.