What does "unhappy" mean?

Unhappy: In a degree miserable or wretched; not happy; sad; sorrowful; as, children render their parents unhappy by misconduct.

Additional senses

  1. 2.Marked by infelicity; evil; calamitous; as, an unhappy day. "The unhappy morn." Milton.
  2. 3.Mischievous; wanton; wicked. [Obs.] Shak. -- Un*hap"pi*ly, adv. -- Un*hap"pi*ness, n.

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