Negatory is a slang term used to express a negative response or refusal. It is often used in informal contexts and can be spelled in a variety of ways. The crossword solutions for the term negatory are NOPE (4 letters), NAY (3 letters), and IXNAY (5 letters). NOPE is an informal way of saying no, while NAY is an archaic form of the same word. IXNAY is a more emphatic version of the word, derived from the phrase 'nix it'. All three words are used to express a negative response or refusal.