There are several, but defining one as the 'best' is not possible without knowing your context. Choose from:
An adjective would be used to describe a noun.
Noun. A person can have impudence. It does not describe a noun; which is what an adjective does. In THAT case, the adjective would be impudent.
No, hunt is not an adjective because it does not describe the noun. Hunt would be a noun, not an adjective!
movement is a noun, move is a verb and movable would be an adjective
word ending-Cardiac is it a noun or a adjective
The answer would depend on a semicircular WHAT. Semicircular is an adjective, there is no noun to go with it.The answer would depend on a semicircular WHAT. Semicircular is an adjective, there is no noun to go with it.The answer would depend on a semicircular WHAT. Semicircular is an adjective, there is no noun to go with it.The answer would depend on a semicircular WHAT. Semicircular is an adjective, there is no noun to go with it.
No, it is a noun. Traitorous would be an adjective.
No, it is not an adjective. Occupation is the noun. Occupational would be an adjective.
The word cheerful is an adjective, a word that describes a noun. The noun form is cheerfulness.
Answer is not an adjective. The action of answering would be a verb and the answer itself would be a noun.
Monster is a noun. Monstrous would be the adjective.
No, it's a noun. Effective would be the adjective.