The term 'AIN'T HAPPENING!' is a phrase used to express that something is not going to happen. The crossword solutions for this phrase are NAH (3 letters), NOPE (4 letters), NAY (3 letters), UHUH (4 letters), IWONT (5 letters), NOHOW (5 letters), NODICE (6 letters), NOSOAP (6 letters), ICANNOT (7 letters), NOCANDO (7 letters), and NOSIREE (7 letters). All of these solutions are phrases used to express that something is not going to happen, and they all have a similar meaning to the original phrase.