As a number, it could be a noun or adjective, depending on whether it is followed by a noun which it gives the quantity of.
As a year number, it is less well defined. Normally, year numbers are defined as nouns.
But they seem to function as adjectives when used in such constructions as "the 1976 yearbook" or "a 1976 dime." A definitive classification is elusive.
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
It is an adjective.It is a an adjective.
An adjective
it is an adjective!
No. It is not an adjective. An adjective describes something.
Cautious IS an adjective. An adjective is an action!
No, it is an adverb. The adjective is clumsy.
It can be. "Ideal" is an adjective and a noun.
adjective
It is not an adjective. It is a noun based on the adjective unfit.
No, it is not an adjective; it is an adverb. The adjective form is "awkward."
Yes, it is an adjective.