WordWeb Online

1. Arousing desire or expectation for something unattainable or mockingly out of reach
   "a tantalizing taste of success";
   - tantalising [Brit]
    
2. Very pleasantly inviting
   "a tantalizing aroma";
   - tantalising [Brit], tempting

1. Excite or tease by presenting or offering something desirable, esp. when it is unobtainable
   "he also was tantalized by glimpses of the real world of espionage";
   - tantalise [Brit]

See also: inviting

Encyclopedia: Tantalize