The Oxford Thesaurus An A-Z Dictionary of Synonyms - suspicion n.

1) doubt, dubiousness, dubiety, misgiving, mistrust, distrust, scepticism, qualm, wariness, apprehension, apprehensiveness, cautiousness, hesitation, second thought(s) , uncertainty, leeriness, Colloq funny feeling, bad vibes: We all had our suspicions about Edward's genuine intentions. My worst suspicions have now been confirmed. 2) notion, inkling, suggestion, hint, trace, flavour, soup‡on, taste, dash, glimmer, tinge, touch, shadow, shade, scintilla, Colloq chiefly US and Canadian tad: If you have even a suspicion of doubt, do not find the defendant guilty. Did I detect a suspicion of a sneer?