Tic

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Left Definition 1 of 3Right
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Involuntary ActionPlay
A tic is an involuntary movement or sound that a person cannot control. SlideEven during his presentation, his nervous tic appeared.
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Not PersistentPlay
Tics are usually temporary and could be caused by stress or tiredness. SlideHer eye tic only shows up when she's exhausted.
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Medical ConditionPlay
Frequent or severe tics can be a sign of a medical condition like Tourette syndrome. SlideHe was diagnosed with a condition that makes him have tics.