WordWeb Online

1. Made sprightly or cheerful
    
2. Made lively or spirited
   "a meal enlivened by the music"
   - spirited

1. Heighten or intensify
   "These paintings enliven the imagination"
   - inspire, animate, invigorate, exalt
    
2. Make lively
   - liven, liven up, invigorate, animate

See also: alive, animated, enlivener, lively, perked up

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

Antonym: deaden, unenlivened