In its most common usage, in is a preposition. However, it can be an adjective in usages such as, "Orange is really in this year" (meaning "in fashion") or "The serve was in" (meaning "in bounds") or "The doctor is in" (meaning "in her office").
A modern adjective use of the word means in vogue or in style, e.g. the in crowd.
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
No, it is not an adjective. Differently is an adverb.The adjective would be different.
It is an adjective.It is a an adjective.
No, it is an adverb. The adjective is clumsy.
It can be. "Ideal" is an adjective and a noun.
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
No, it is not an adjective. Differently is an adverb.The adjective would be different.
It is an adjective.It is a an adjective.
No. It is not an adjective. An adjective describes something.
it is an adjective!
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.
It is not an adjective. It is a noun based on the adjective unfit.
adjective
No, it is not an adjective; it is an adverb. The adjective form is "awkward."
Popular is an adjective. Population is not an adjective.