The term 'REST ON' can be solved by four different words: RELY (4 letters), LEAN (4 letters), SIT (3 letters), ABUT (4 letters), and Sitatop (7 letters). RELY means to depend on someone or something for support, while LEAN means to incline or bend from a vertical position. SIT is an action of placing oneself in a seated position, and ABUT means to be adjacent to or touching something. Finally, Sitatop means to SIT on the top of something.