The quality or feeling of being unhappy because you don't have or can't get what you want.
From discontented + -ness (Old English suffix). The -ness suffix transforms the adjective into an abstract noun describing a persistent state or characteristic quality.
Researchers in psychology call this 'hedonic adaptation'—humans naturally feel 'discontentedness' because we get used to good things and always want more, which is both a curse and what drives human progress!
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