The term 'QUIT FLYING' can be broken down into two crossword solutions: ALIT (4 letters) and DITCH (5 letters). ALIT is a verb meaning to take off or ascend, usually referring to an aircraft. DITCH is a verb meaning to abandon or give up on something. Together, these two words suggest that one should stop flying, either in the literal sense of getting out of an aircraft, or in the figurative sense of giving up on something.