Jaded

1. Bored or lacking enthusiasm, typically after having been over exposed to, or having consumed too much of something. Synonyms: cloyed, gorged, glutted, satiated, sated, surfeited
2. Worn out, wearied, exhausted or lacking enthusiasm, due to age or experience.Synonyms: exhausted, fatigued, wearied
3. Made callous or cynically insensitive, by experience.Synonym: blasé