1. (noun)resentment, bitterness, gall, rancor, rancour a feeling of deep and bitter anger and ill-will
2. (noun)bitterness, acrimony, acerbity, jaundice, tartness, thorniness a rough and bitter manner
3. (noun)bitter, bitterness the taste experience when quinine or coffee is taken into the mouth
4. (noun)bitterness, bitter the property of having a harsh unpleasant taste
Definition of 'bitterness'
Webster Dictionary
1. (noun)bitterness 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
2. (noun)bitterness a state of extreme impiety or enmity to God
3. (noun)bitterness dangerous error, or schism, tending to draw persons to apostasy
Definitions of bitterness 
Afrikaans: bitterheid
Arabic: مَرار، مَرارَه
Bulgarian: горчивина
Brazilian: amargura
Czech: hořkost, nepřátelství, zl
German: verbittert
Danish: bitterhed
Greek: πικρία
Spanish: amargura
Estonian: kibedus
Farsi: تلخی
Finnish: katkeruus
French: amertume
Hebrew: מְרִירוּת
Hindi: तिक्तता, कटुता
Croatian: gorčina
Hungarian: keserűség
Indonesian: kepahitan
Icelandic: beiskja
Italian: amarezza; asprezza
Japanese: 苦さ
Korean: 쓴맛, 쓰라림, 비통
Lithuanian: kartumas
Latvian: rūgtums
Malay: kepahitan
Dutch: bitterheid
Norwegian: bitterhet
Polish: gorycz, przykrość
Persian: تلخی
Pashto: تړیخی
Portuguese: amargura
Romanian: amărăciune
Russian: горечь
Slovak: horkosť
Slovenian: grenkoba
Serbian: gorčina
Swedish: bitterhet
Thai: ความขมขื่น
Turkish: acılık, burukluk, içerlem
Taiwanese: 苦味
Ukrainian: гіркота; лють
Urdu: کڑوایٹ
Vietnamese: sự cay đắng
Chinese: 苦味
