Yes, the word 'their' is a possessive adjective, a form of pronoun that is placed before a noun to describe that noun as belonging to two or more people or things.
The possessive adjectives are: my, your, his, her, their, its.
A possessive adjective is does not function the same as a possessive pronoun.
A possessive pronoun takes the place of a noun that belongs to someone or something.
The possessive pronouns are: mine, yours, his, hers, its, ours, theirs.
For example, "It is their work." In this sentence their is a possessive adjective because it modifies the noun work. Whose work? Their work. It tells more about it so functions as an adjective.
Theirs is a possessive pronoun because it takes the place of the noun in the sentence, which is how a pronoun functions. "Whose work is this? It's theirs." Theirs is the pronoun because it refers back to and takes the place of the noun (its antecedent) work.
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.