TITILLATE

[tit.il.late] vb -lat.ed ; -lat.ing [L titillatus, pp. of titillare] vt (1620) 1: to excite pleasurably: arouse by stimulation

2: tickle ~ vi: to act as a stimulant to pleasurable excitement -- tit.il.la.tion n -- tit.il.la.tive adj