Answer:
ADJECTIVE
In a bitter argument or conflict, people argue very angrily or fight very fiercely.
...the scene of bitter fighting during the Second World War.
...a bitter attack on the Government's failure to support manufacturing.
On the eve of the poll, campaigning was bitter.
Synonyms: grievous, hard, severe, distressing More Synonyms of bitter
bitterly ADVERB [usually ADVERB with verb, oft ADVERB adjective]
Any such thing would be bitterly opposed by most of the world's democracies.
...a bitterly fought football match.
Synonyms: grievously, harshly, cruelly, savagely More Synonyms of bitter
Synonyms: greatly, terribly, sorely, awfully [informal] More Synonyms of bitter
Synonyms: sourly, sharply, acidly, tartly More Synonyms of bitter
bitterness UNCOUNTABLE NOUN
The rift within the organization reflects the growing bitterness of the dispute. [+ of]
Synonyms: sourness, acidity, sharpness, tartness More Synonyms of bitter
Synonyms: intense cold, bite, chill, sting More Synonyms of bitter
Synonyms: trauma, tragedy, grief, misery More Synonyms of bitter
Explanation:
