What is the adjective in the following sentence: "The slithery serpent
slithered silently."

Explanation:

First, remember what an adjective is.  An adjective describes a noun.

Let's examine the sentence.

The slithery serpent slithered .

Slithery describes the serpent.

Serpent is the noun (person, place, thing, or idea).

Slithered is the verb or action.

is the adverb. It describes the verb. (How did the serpent slither? It slithered silently).

Since slithery describes the noun, it is the adjective.

i need more details

explanation:

idk im sorry well i am new at this so im trying