Noah Webster
Unhappiness
UNHAP'PINESS, noun
1. Misfortune; ill luck.
2. Infelicity; misery.
It is our great unhappiness when any calamities fall upon us, that we are uneasy and dissatisfied.
[But it usually expresses less than misery or wretchedness.]
3. Mischievous prank. [Not in use.]