The word inconspicuously is an adverb.
You can easily spot adverbs as the majority of them end in the suffix -ly.
The girls passed the notes inconspicuously so the teacher wouldn't notice.
He tried to inconspicuously enter the building that he had been banned from.
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
furtively, inconspicuously, nervously, quietly
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.
The part of speech of "came" is a verb.