Yes, it is. It is the somewhat rarely-used adverb form of the adjective stealthy.
Stealthy , stealthily ,ninja
No, it is not an adverb. The word dollar is a noun. There is no adverb form.
The word he is a pronoun; an adverb modifies a verb or an adverb.
Yes. An adverb can modify a verb, an adjective or another adverb.
The word not is an adverb. The word there can be an adverb. The combination "not there" is a compound adverb.The homophone phrase "they're not" includes a pronoun, a verb, and an adverb, because the adverb not has to modify an understood adjective or adverb (e.g. "They're not colorful).
Stealthily is the adverb form for stealth. Stealthy is the adjective form. The cat moved stealthily. The cat was stealthy.
The word "stealthily" is an adverb. It describes how an action is performed, in a secretive or cautious manner.
Stealthily is an adverb. The ending "-ly" gives a strong indication of its part of speech.
As an adverb, "creep" means to move slowly and stealthily, typically in a cautious or furtive manner.
An adverb *related to crept* is creepingly. (not often used) An adverb that *modifies crept* could be silently, stealthily, slowly, or inexorably.
I entered the room stealthily, hoping to remain unnoticed.
He stealthily snuck into the clock tower known as Big Ben
stealthily
The sniper crept stealthily through the bushes, trying to remain unnoticed.
secretly, stealthily,
heimlich
I think you mean stealthily, which means sneakily. He crept downstairs stealthily, but his mom still caught him before he could sneak outside.