+Bitterness is a fundamental [Taste](/wiki/taste) sensation, often sharp and sometimes unpleasant, detected by the tongue. It can also describe a persistent, painful [Emotion](/wiki/emotion) of anger or resentment over past hurts, poisoning present joy.
+## See also
+- [Flavor](/wiki/flavor)
+- [Resentment](/wiki/resentment)
+- [Anger](/wiki/anger)
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