(n.) A hint; an intimation\.

bare suggestion broad hint clue cue dash gentle hint gesture glimmer glimmering half an idea hazy idea hint idea implication impression index indication infusion innuendo insinuation intimation kick look mere notion nod notion nudge prompt sauce scent seasoning shade sign signal smack sneaking suspicion soupcon spice spoor sprinkling suggestion suspicion symptom taint telltale tempering thought tinct tincture tinge tint tip tip-off touch trace track vague idea vestige whisper wind wink