(1):
(a.) Marked by infelicity; evil; calamitous; as, an unhappy day.
(2):
(a.) Mischievous; wanton; wicked.
(3):
(a.) In a degree miserable or wretched; not happy; sad; sorrowful; as, children render their parents unhappy by misconduct.
(4):
(a.) Not happy or fortunate; unfortunate; unlucky; as, affairs have taken an unhappy turn.