The term 'tear up' can be defined by the following crossword solutions: SHRED (5 letters), WEEP (4 letters), MIST (4 letters), RIP (3 letters), CRY (3 letters), REND (4 letters), growmistyeyed (13 letters), and ripintoshreds (13 letters). SHRED means to cut or tear something into small pieces, WEEP means to shed tears, MIST means a light fog or spray, RIP means to tear something apart, CRY means to shed tears, REND means to tear apart, growmistyeyed means to become teary-eyed, and ripintoshreds means to tear something into shreds. All of these words are related to the term 'tear up' in that they all involve tearing or crying.