Tic and Vellicate

Tic noun - An odd or peculiar habit.

Vellicate and tic are semantically related In some cases you can use "Vellicate" instead a verb "Tic".

Vellicate verb - Touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements.

Tic and vellicate are semantically related in have a spasm topic. Sometimes you can use "Tic" instead a verb "Vellicate".