Dictionary
Bitter
Having or being a taste that is sharp, acrid, and unpleasant.
Causing a sharply unpleasant, painful, or stinging sensation; harsh: enveloped in bitter cold; a bitter wind.
Difficult or distasteful to accept, admit, or bear: the bitter truth; bitter sorrow.
Resulting from or expressive of severe grief, anguish, or disappointment: cried bitter tears.
Marked by resentment or cynicism
Sugestion: reinforce
Full meaning