The word "a" is called an indefinite article, an adjective that means one unspecified example, object, or person of a given group, e.g. a subject, a toy, a man.
*most sources classify a, an, and the (the three articles) as determiners rather than adjectives.
Cautious IS an adjective. An adjective is an action!
The word "it" is not an adjective (it is a pronoun). A word is an adjective if it modifies (defines, characterizes) a noun or pronoun. The big tent - big is an adjective He is tall - tall is an adjective This key - this (while arguably called a determiner) is a demonstrative adjective
probable is an adjective
Hard is an adjective.
Stable is an adjective.
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
No, it is not an adjective; it is an adverb. The adjective form is "awkward."
It is not an adjective. It is a noun based on the adjective unfit.
Yes, it is an adjective.