The term 'off one's rocker' is an idiom used to describe someone who is acting in an irrational or crazy manner. The crossword solutions for this term include DIPPY (5 letters), GAGA (4 letters), LOOPY (5 letters), BONKERS (7 letters), LOONY (5 letters), SCREWY (6 letters), INSANE (6 letters), NUTTY (5 letters), MAD (3 letters), BATTY (5 letters), Arisen (6 letters), DERANGED (8 letters), NUTSO (5 letters), BATS (4 letters), DOTTY (5 letters), CRAZED (6 letters), DAFT (4 letters), LOCO (4 letters), NUTS (4 letters), WACKY (5 letters), Madasahatter (12 letters), and Noncomposmentis (15 letters). All of these words are synonyms for the phrase 'off one's rocker' and can be used to describe someone who is acting in a crazy or irrational way.