The term LEAN (ON) can be solved by four different crossword solutions: URGE (4 letters), DEPEND (6 letters), URG (3 letters), and RELY (4 letters). URGE means to strongly encourage someone to do something, while DEPEND means to RELY on someone or something for support. URG is a shortened version of URGE, and RELY means to DEPEND on someone or something for help. All four words imply that one person is relying on another for assistance.