Definify.com
Webster 1913 Edition
Unhappy
Un-hap′py
,Adj.
 1. 
Not happy or fortunate; unfortunate; unlucky; 
as, affairs have taken an 
. unhappy 
turn2. 
In a degree miserable or wretched; not happy; sad; sorrowful; 
as, children render their parents 
. unhappy 
by misconduct3. 
Marked by infelicity; evil; calamitous; 
“The unhappy morn.” as, an 
. unhappy 
dayMilton.
 4. 
Mischievous; wanton; wicked. 
[Obs.] 
Shak.
 Un-hap′pi-ly 
(#)
, adv.
 Un-hap′pi-ness
, Noun.
Webster 1828 Edition
Unhappy
UNHAP'PY
, a.1.
  Unfortunate; unlucky.  He has been unhappy in his choice of a partner.  Affairs have taken an unhappy turn.2.
  Not happy; in a degree miserable or wretched.  She is unhappy in her marriage.  Children sometimes render their parents unhappy.3.
  Evil; calamitous; marked by infelicity; as an unhappy day.This unhappy morn.
4.
  Mischievous; irregular.Definition 2025
unhappy
unhappy
English
Adjective
unhappy (comparative unhappier, superlative unhappiest)
-  Not happy; sad.
-  John Gay, The Beggar's Opera
- A moment of time may make us unhappy forever.
 
 
 -  John Gay, The Beggar's Opera
 -  Not satisfied; unsatisfied.
- An unhappy customer is unlikely to return to your shop.
 
 -  Not lucky; unlucky.
- The doomed lovers must have been born under an unhappy star.
 
 -  Not suitable; unsuitable.
-  John Foxe
-  The people, if they are not strangely bent
Against our welfare, never will consent
To this unhappy match, foreboding ill:
What's it to us, if th' adverse nation will? 
 -  The people, if they are not strangely bent
 
 -  John Foxe
 
Synonyms
- See also Wikisaurus:unhappy
 
Antonyms
Translations
not happy; sad
  | 
  | 
not satisfied; unsatisfied
not lucky; unlucky
not suitable; unsuitable
Noun
unhappy (plural unhappies)
-  An individual who is not happy.
-  1972, The New Yorker (volume 48, part 1, page 109)
- Leduc, as is true of many other unhappies, is largely a confessional writer: her subject is herself, and her gift is a driving, vivacious power that turns her incurable, inveterate unhappiness into a series of dramas […]
 
 
 -  1972, The New Yorker (volume 48, part 1, page 109)