suss Brit.
informal
■ verb ( susses , sussing , sussed )
1》 realize.
↘understand the true character or nature of.
2》 [as adjective sussed ] clever and well informed.
■ noun
1》 (also sus ) a police suspect.
2》 knowledge or awareness of a specified kind: business suss.
■ adjective (also sus ) shrewd and wary.
Origin
1930s: abbrev. of suspect , suspicion .