Un-häp'pi-ness, n.
n. 1. The state or quality of being unhappy; misfortune; ill luck; infelicity; misery.
It is our great unhappiness, when any calamities fall upon us, that we are uneasy and dissatisfied. Wake.
☞ Unhappiness usually expresses less than misery or wretchedness.
Sense 2. Mischievous prank. [Obs.] Shak.