The term 'pack up and leave' can be summarized by two crossword solutions: 'DECAMP' (6 letters) and 'moveout' (7 letters). DECAMP is a verb meaning to leave a place suddenly and secretly, often as part of an escape or retreat. Moveout is a noun meaning the act of leaving a place, usually one's home, to go and live somewhere else. Both words imply the idea of packing up one's belongings and leaving a place.