1. tickle, titillate, vellicate, itch

usage: touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements

2. titillate, stimulate, shake, shake up, excite, stir

usage: excite pleasurably or erotically; "A titillating story appeared in the usually conservative magazine"

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See also: titillate (Dictionary)