He has a tic that makes him blink often.
A sudden, repetitive movement or sound made by a person.
She has a tic of tapping her foot when she is nervous.
A habitual, involuntary action or behavior.
He tic-tic-tic'd his fingers on the table.
To make a quick, sharp sound or movement.
"Tic! I can't believe you forgot again!"
A sound made to express annoyance or impatience.
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