The term 'chip in' is a phrase that means to CONTRIBUTE or GIVE money, goods, or services to a cause or activity. The crossword solutions for this term include 'ante' (4 letters), 'INTERRUPT' (9 letters), 'ASSIST' (6 letters), 'PARTICIPATE' (11 letters), 'CONTRIBUTE' (10 letters), 'GIVE' (4 letters), 'anteup' (6 letters), and 'DONATE' (6 letters). All of these words refer to the act of giving something to a cause or activity, whether it be money, goods, or services.