Humdrum
Dull, Monotonous, or commonplace
Apathy
Indifference, or lack of interest or emotion
Ennui
A feeling of weariness, dissatisfaction, or boredom
Disconsolate
Completely unhappy or sorrowful
Dolor
Mental suffering, grief, sorrow, or distress
Somber
Dark, gloomy, melancholy, grave, or depressing
Qualm
A sudden feeling of uneasiness, misgiving, or doubt
Pother
Bustle, fuss, or excitement mixed with confusion
Discompose
To agitate or disturb the order of
Appall
To horrify, shock, or dismay
Consternation
Dismay, terror, or fearful amazement
Tremulous
Trembling, quivering, or timid