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Verb: suss out
Usage: Brit, informal
  1. Find the solution to (a problem or question) or understand the meaning of
    - solve, work out, figure out, puzzle out, lick [N. Amer, informal], work, suss [Brit, informal], unriddle
  2. Examine so as to determine accuracy, quality, or condition
    "suss out the brakes";
    - check, check up on, look into, check out, check over, go over, check into, suss [Brit, informal], sus [Brit, informal]

Derived forms: sussed out, susses out, sussing out

Type of: analyse [Brit, Cdn], analyze [N. Amer], canvass, examine, study, understand