The term FESSES (UP) is composed of four words: ADMITS (6 letters), OWNS (4 letters), TALKS (5 letters), and COMESCLEAN (10 letters). Admits means to accept or acknowledge something, while OWNS means to possess or have control over something. Talks refers to speaking or communicating, and comesclean means to confess or admit to something. Together, these words suggest that FESSES (UP) means to accept responsibility, own up to one's actions, talk about it, and come clean.