The term 'chime in' is an idiom meaning to join a conversation or discussion. The crossword solutions for this term include 'DECLARE' (7 letters), 'INTERRUPT' (9 letters), 'DELIVER' (7 letters), 'ADD' (3 letters), 'SPEAK' (5 letters), 'bell' (4 letters), 'OPINE' (5 letters), 'BOTHER' (6 letters), 'KIBITZ' (6 letters), 'pipeup' (6 letters), 'REVEAL' (6 letters), and 'ANNOUNCE' (8 letters). All of these words can be used to describe joining a conversation, either by speaking up, interrupting, or making a declaration.