adjective. \ ˈdəm-pē \ dumpier; dumpiest.

Is any adjective or adverb?

as an adverb (usually followed by the comparative form of an adjective or adverb): Are you feeling any better? Any is used especially in questions, in negative sentences, and in clauses with 'if': Is there any coffee left? There weren't any complaints. I can lend you a map if that's any help.

When as an adverb in a sentence?

as a conjunction (connecting two clauses): When he saw me, he waved. as a question adverb (introducing a direct or indirect question): When shall we meet? Do you know when these houses were built? as a relative adverb (referring back to a noun and introducing a relative clause): I remember the day when the war began.