The term 'surrender possession' can be summarized by two crossword solutions: 'CEDE' (4 letters) and 'VACATE' (6 letters). CEDE is a verb meaning to give up or transfer possession or control of something, usually to another person or entity. VACATE is also a verb meaning to leave a place, especially one's home or workplace, or to give up a position or office. Both words imply the relinquishment of ownership or control of something.