- resentment, bitterness, gall, rancor, rancour - a feeling of deep and bitter anger and ill-will
--1 is a kind of hostility, enmity, ill will
--1 has particulars:heartburning; sulkiness, huffishness; grudge, score, grievance; envy, enviousness, the green-eyed monster - bitterness, acrimony, acerbity, jaundice - a sharp and bitter manner
--2 is a kind of disagreeableness
- bitter, bitterness - the taste experience when quinine or coffee is taken into the mouth
--3 is a kind of taste, taste sensation, gustatory sensation, taste perception, gustatory perception
- bitterness, bitter - the property of having a harsh unpleasant taste
--4 is a kind of taste property
--4 has particulars: acerbity; acridity, acridness