red-herring (noun) red herring: misleading clue
Sinonime: attention-grabber,
bait,
commotion, curve ball,
deviation,
distraction, distractor,
disturbance,
diversion, diversionary tactic, false clue, false face, false trail, fool's errand, gimmick,
interruption,
maneuver,
ploy, smoke screen, wild-goose chase