Akademik

dissatisfaction
noun
the feeling of being displeased and discontent (Freq. 2)
-

he was never slow to express his dissatisfaction with the service he received

Ant: ↑satisfaction
Derivationally related forms: ↑dissatisfy
Hypernyms: ↑discontentment, ↑discontent, ↑discontentedness
Hyponyms: ↑boredom, ↑ennui, ↑tedium, ↑displeasure, ↑disappointment, ↑letdown

Useful english dictionary. 2012.