I have a question; probably should be posted on a grammar board, but hope I will get an answer.
What truly makes an adjective? As example, the word "oust" is defined as a verb; however, the word can be used as an adjective (participle): "The ousted politician ..."
My question: Is a true adjective a word that cannot be used as a verb? A "red" apple; a "blue" sky. Are true adjectives words that cannot be used as verbs?