The term 'Take a Chill Pill' is an idiom used to encourage someone to RELAX and not worry about a situation. The crossword solutions for this term are RELAX (5 letters), EASY (4 letters), BECOOL (6 letters), COOLIT (6 letters), EASEUP (6 letters), CALMDOWN (8 letters), KEEPCOOL (8 letters), LOOSENUP (8 letters), SIMMERDOWN (10 letters), and SITBACKANDRELAX (15 letters). All of these words and phrases suggest that the person should take a step back, RELAX, and not let the situation get out of hand.