Also found in: Idioms.
tr.v. sussed, suss·ing, suss·es Slang
1. To infer or discover; figure. Often used with out: "I think I'm good at sussing out what's going on" (Ry Cooder).
2. To size up; study. Often used with out: "Suss out the designers in whom you are interested" (Lucia van der Post).
[Probably short for suspect.]
informal Brit well-informed; aware