Synonyms and related words :
abandon, back out, be unfaithful, beg off, break faith, cry off, depart from, desert, discard, drop out, evacuate, fail, forsake, jettison, jilt, leave, leave behind, leave flat, maroon, pass the buck, pull out, quit, quit cold, renege, say goodbye to, shift the blame, shift the responsibility, stand down, take leave of, throw over, vacate, withdraw