v. & n. (also sus) Brit. sl.
v.tr. (sussed, sussing) 1 suspect of a crime. 2 (usu. foll. by out) a investigate, inspect (go and suss out the restaurants). b work out; grasp, understand, realize (he had the market sussed).
n. 1 a suspect. 2 a suspicion; suspicious behaviour. on suss on suspicion (of having committed a crime).
[ abbr. of SUSPECT, SUSPICION ]