The term 'uh-uh' is an informal expression used to indicate disagreement or refusal. The crossword solutions for this term include 'NAH', 'NOPE', 'naw', 'NAY', 'ixnay', 'notme', 'notso', 'isayno', 'nodice', 'nosoap', 'backoff', 'badidea', 'nocando', 'nosiree', 'dontdoit', 'fraidnot', 'nowayjose', 'surelynot', 'thinkagain', 'theresnoway', 'whenpigsfly', 'aintgonnahappen', and 'youmustbejoking'. All of these words are variations of the phrase 'uh-uh' and can be used to express a negative response or refusal.