Unhappy because you don't have what you want or because something isn't good enough for you.
From dis- (not) + contented (satisfied, from Latin contentus: held together, satisfied). The past participle form suggests a state that has been achieved or imposed. The meaning evolved from 'not satisfied' to 'actively unhappy about it.'
The famous phrase 'the winter of our discontent' from Shakespeare's Richard III used 'discontent' to describe political rebellion—showing how dissatisfaction with what you have can spark real-world change!
Complete word intelligence in one call. Free tier — 50 lookups/day.