feeling angry, jealous, and upset because you think you have been treated unfairly [↪ bitterly]
a bitter old man
2 [only before noun]
making you feel very unhappy and upset [↪ bitterly]
a bitter disappointment/blow
If he failed, it would be a bitter disappointment to his parents.
His photo stirred up bitter memories.
a bitter argument, battle etc is one in which people oppose or criticize each other with strong feelings of hate and anger
having a sharp strong taste like black coffee without sugar [↪ sour; sweet]:
Enjoy the beer's bitter taste as you slowly drink it.
unpleasantly cold [↪ bitterly]:
a bitter wind
the bitter cold of the Midwestern winters
continuing until the end, even though this is difficult:
Employees have vowed to fight the closure to the bitter end.
something very unpleasant that you must accept:
The knowledge that his friends no longer trusted him was a bitter pill to swallow.
—bitterness noun [uncountable]WORD FOCUS: taste
delicious/tasty tastes very good
disgusting tastes very bad
hot/spicy has a lot of spices
bland boring and with not very much taste
sweet has a lot of sugar
salty has a lot of salt
sour used about fruit that is not sweet
bitter used about coffee, chocolate, or medicine that is not at all sweettaste
➔ See also taste