The term SUBS (FOR) can be solved by the crossword solutions COVERS (6 letters) and SITSIN (6 letters). The term SUBS (FOR) is a shortened version of the phrase 'substitute for', which is used to describe someone who takes the place of another person or thing. The solution COVERS implies that the substitute is taking over the duties of the original person or thing, while the solution SITSIN implies that the substitute is taking the place of the original person or thing.