Noun
unhappiness (countable and uncountable, plural unhappinesses)
The feeling of not being happy
The search for happiness is one of the chief sources of unhappiness. Eric Hoffer
Unhappiness is best defined as the difference between our talents and our expectations. Edward de Bono
A man's happiness or unhappiness depends as much on his temperament as on his destiny. François de La Rochefoucauld
A smiling face dispels unhappiness. Nigerian Proverb
Unhappiness can be a bridge to happiness. Japanese Proverb
Consider whether your fun will cause another's unhappiness. American Proverb