1. Giving spirit and vivacity
   "The enlivening music lifted everyone's mood at the party";
   - animating

1. Make lively
   "The music enlivened the party atmosphere";
   - liven, liven up, invigorate, animate
    
2. Heighten or intensify
   "These paintings enliven the imagination";
   - inspire, animate, invigorate, exalt

See also: invigorating

Type of: arouse, brace, energise [Brit], energize, excite, perk up, shake, shake up, stimulate, stir