Definition of bitterness :
1. A state of extreme impiety or enmity to God.
2. Dangerous error, or schism, tending to draw persons to apostasy.
3. 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.
saddle sore, gall, unkindness, sweetness, malignity, harshness, rancour, impertinence, icterus, pain, sour, moroseness, crust, balm, solace, feelings, spininess, blandness, asperity, thorniness, bristliness, distress, cynicism, embitterment, enjoyment, bitter, mordancy, impudence, resentfulness, rancorousness, freshness, insolence, jaundice, virulency, cheekiness
hate (part of speech: noun)
painfulness (part of speech: noun)
cruelty, torture, aggravation, hurtfulness, grievousness, severity, arduousness, agony, painfulness, ache, offensiveness, irksomeness, odiousness, acuteness, woefulness, uncomfortableness, oppressiveness, unpleasantness, misery, annoyingness, anguish, torment, distressfulness
sourness (part of speech: noun)
malevolence (part of speech: noun)
enmity (part of speech: noun)
contention, polarity, averseness, discordance, coolness, malevolence, conflict, bad blood, inimicality, adverseness, incompatibility, dislike, hostility, alienation, unfriendliness, quarrelsomeness, inharmoniousness, tension, friction, combativeness, coldness, opposition, contrariety
cold (part of speech: noun)
resentment (part of speech: noun)
irritability (part of speech: noun)
crabbedness, petulance, irritability, crossness, acerbity, peevishness, huffiness, crankiness, cantankerousness, bitchiness, surliness, sourness, pettiness, touchiness, bearishness, causticity, crustiness, churlishness, prickliness, tartness, spitefulness, bellicosity, acidity, irascibility
pungency (part of speech: noun)
- The man's whole life is not worth one hour of Melody's," he added with some bitterness; " but that makes no difference, I suppose. - "Melody The Story of a Child", Laura E. Richards.
- The bitterness was gone now and ill feeling forgotten. - "The Comings of Cousin Ann", Emma Speed Sampson.
- Why we hate with so much bitterness those who deceive us is because they think themselves more clever than we are. - "The Best of the World's Classics, Restricted to Prose, Vol. VII (of X)--Continental Europe I", Various.