No, it is a noun. It may be used with other nouns as a noun adjunct (e.g. dealer costs, dealer sales).
No. Dealer is a noun (a person). Used with another noun (dealer discount, dealer incentives), it is a noun adjunct rather than an adjective.
a new the business the automobile
imperfect.She had imperfect teeth.A2. A concept you should explore is Roget's Thesaurus or similar. You can pick one up cheap at a 2dn hand book dealer.
dealer dealer
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.
No, it is not an adjective. Differently is an adverb.The adjective would be different.
No. It is not an adjective. An adjective describes something.
Cautious IS an adjective. An adjective is an action!
A card dealer. A croupier.
No, it is an adverb. The adjective is clumsy.
It can be. "Ideal" is an adjective and a noun.