Webster's Revised Unabridged Dictionary · 1913

Unhappy

Unhappy , adjective

1.
Not happy or fortunate; unfortunate; unlucky; as, affairs have taken an unhappy turn.
2.
In a degree miserable or wretched; not happy; sad; sorrowful; as, children render their parents unhappy by misconduct.
3.
Marked by infelicity; evil; calamitous; as, an unhappy day.
The unhappy morn. — Milton
4.
Mischievous; wanton; wicked. [Obsolete] — Shakespeare