suss

Universal Words (also sus) verb ~ (sb/sth) (out) (BrE, informal) to realize sth; to understand the important things about sb/sth: [VN] I think I've got him sussed (= now I understand him). * If you want to succeed in business you have to suss out the competition. * [V] He cheated on her for years, but she never sussed. [also Vthat, Vwh-]