ennui

Pronunciation:  US [ɑnˈwi] UK [ˈɒnwiː]
  • n.Burnout; boredom; boredom
  • WebSo boring; GF.enniu; boredom
  • The ship's monkey,..with no pig now to tease, nearly died of ennui.sssss S. O'Faol&aacusc;in
    Source: ssssR. Hughes