The word silently, like most (but not all) words that end in -ly, is an adverb.
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.
The word "creep" can be a verb (e.g. "to creep silently") or a noun (e.g. "a creepy person").
"Ghost" can be both a noun and a verb. As a noun, it refers to the spirit of a dead person. As a verb, it means to move silently and stealthily.
Mumble or slurred speech could be considered antonyms of "speak clearly."
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
Silently is the correct spelling.
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.