Source : Webster's Revised Unabridged Dictionary (1913)

Provocative \Pro*vo"ca*tive\, a. [L. provocativus: cf. OF.
   provocatif.]
   Serving or tending to provoke, excite, or stimulate;
   exciting.

Provocative \Pro*vo"ca*tive\, n.
   Anything that is provocative; a stimulant; as, a provocative
   of appetite.

Source : WordNet®

provocative
     adj 1: serving or tending to provoke, excite, or stimulate;
            stimulating discussion or exciting controversy; "a
            provocative remark"; "a provocative smile";
            "provocative Irish tunes which...compel the hearers to
            dance"- Anthony Trollope [ant: {unprovocative}]
     2: exciting sexual desire; "her gestures and postures became
        more wanton and provocative"