刺激

刺激	cì jī	to provoke; to irritate; to upset; to stimulate; to excite / irritant
刺	cī	(onom.) whoosh
刺	cì	thorn / sting / thrust / to prick / to pierce / to stab / to assassinate / to murder
激	jī	to arouse / to incite / to excite / to stimulate / sharp / fierce / violent