And the word “Sparta” is sometimes used as an adjective to mean “awesome.”
Have you never repeated the adjective someone used when asking you a question?
You use an adjective, it better be a sixty-four-dollar adjective.
I thought he gave it a valiant try, but it still left me yearning for an adjective that could best "tomato-ey."
Joyful is certainly one adjective that can be used to describe her latest works.
The Noggin, without the adjective, occurs at a few places in Lancashire and Yorkshire.
He boggled slightly as he came to the "adjective," but got over it safely.
In other cases it is usually possible to put in an adjective or some other word that will take the article's place.
"Striking" was perhaps the one adjective which would best describe her.
Sometimes the word was used by itself, and sometimes an adjective was joined with it, as original men, men surpassing all others.
late 14c., as an adjective, "adjectival," in noun adjective, from Old French adjectif (14c.), from Latin adjectivum "that is added to (the noun)," neuter of adjectivus "added," from past participle of adicere "to throw or place (a thing) near," from ad- "to" (see ad-) + comb. form of iacere "to throw" (see jet (v.)). Also as a noun from late 14c. (adjectives not clearly distinguished from nouns in Middle English). In 19c. Britain, the word itself often was a euphemism for the taboo adjective bloody.
They ... slept until it was cool enough to go out with their 'Towny,' whose vocabulary contained less than six hundred words, and the Adjective. [Kipling, "Soldiers Three," 1888]
Euphemistic substitute for an expletive adjective: You adjectival idiot! (1850+)