bitter — meaning in English

English meaning

abject adj Experienced or done in the most extreme or miserable degree, especially poverty or failure.
acerbic adj Having a sour or bitter taste.
bitter adj Having a sharp, unpleasant taste, the opposite of sweet.
bitters noun A strong, bitter-tasting liquid made from herbs and roots, added in small amounts to cocktails or taken as a tonic.
keen adj Eager and enthusiastic about something.
poignant adj Deeply moving, often with a touch of sadness.
sardonic adjective Scornfully mocking or cynical.
scathing adjective Harshly critical.
sour adjective Having a sharp, acidic taste, like lemon or vinegar.
stern adjective Serious and strict in manner; harsh or severe.

bitter is used for these senses in English:

abject Existing in or sunk to a low condition, position, or state; contemptible, despicable, miserable. [from early 15th c.]
acerbic Tasting sour or bitter.
bitter Harsh, piercing, acerbic or stinging.
bitter Cynical and resentful.
bitters A liquid used in mixed drinks or as a tonic into which bitter herbs have been steeped (it can also be found in powdered form for adding to mixed drinks).
keen Acrimonious, bitter, piercing.
poignant Evoking strong mental sensation, to the point of distress; emotionally moving.
sardonic Disdainfully or ironically humorous.

adj Experienced or done in the most extreme or miserable degree, especially poverty or failure.
adj Lacking self-respect or dignity; deserving contempt.