bitterness

Noun

• the property of having a harsh unpleasant taste

• the taste experience when quinine or coffee is taken into the mouth

• a rough and bitter manner

• a feeling of deep and bitter anger and ill-will

Related words

• Synonyms: 
  bitter , acrimony , acerbity , jaundice , tartness , thorniness , resentment , gall , rancor , rancour