bitterness

n. sourness, acridness; unpleasantness, unhappiness

Bitter can refer to: Bitter, one of the five basic tastes;Bitter, a kind of ale particularly popular in Britain orBitters, an herbal preparation now used mostly in cocktails.Bitter, a German car companyBitterness, an emotion similar to resentment. Francis Bitter, American physicistBitter Coat, A kind of clothing used in Brazilian ceremoniesBitter, single by New Zealand band Shihad. Released in August of 1995, featured two b-sides: Bring your Friends and Just Like Everybody Else.Bitter, an album by Me'shell Ndegeocello.
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Bitter 1. an austere and unpalatable taste like that of quinine. 2. a medicinal and culinary agent used as a tonic, alterative or appetizer. [more]Bitterness - Community and Resources

Noun
1. a feeling of deep and bitter anger and ill-will
(synonym) resentment, gall, rancor, rancour
(hypernym) hostility, enmity, ill will
(hyponym) heartburning
2. a sharp and bitter manner
(synonym) acrimony, acerbity, jaundice
(hypernym) disagreeableness
3. the taste experience when quinine or coffee is taken into the mouth
(synonym) bitter
(hypernym) taste, taste sensation, gustatory sensation, taste perception, gustatory perception
4. the property of having a harsh unpleasant taste
(synonym) bitter
(hypernym) taste property
(hyponym) acerbity

(n.)
The quality or state of being bitter, sharp, or acrid, in either a literal or figurative sense; implacableness; resentfulness; severity; keenness of reproach or sarcasm; deep distress, grief, or vexation of mind.
  

(n.)
Dangerous error, or schism, tending to draw persons to apostasy.
  

(n.)
A state of extreme impiety or enmity to God.