The Oxford Thesaurus An A-Z Dictionary of Synonyms - suspect v.

1) disbelieve, doubt, mistrust, distrust, harbour or have suspicions about or of, be suspicious of: Do you suspect the butler? 2 feel, think, believe, sense, have a feeling, fancy, imagine, theorize, guess, surmise, have a sneaking suspicion, think it likely or probable, Colloq expect: I suspect that the butler might have done it. --adj. 3) suspicious, questionable, doubtful, dubious, shady, shadowy; suspected: If you ask me, his behaviour since boarding the Orient Express has been highly suspect.