In a bitter manner.

In a severe or harsh manner; sharply; severely; angrily: as, to censure bitterly.

adverb. In a bitter manner.

adverb. In a bitter manner.

adverb. extremely and sharply

adverb. with bitterness, in a resentful manner

adverb. indicating something hard to accept

"White also places a dead-looking tree behind the mother and child in his Hope for the Future but adds a noose; this and the mother's dejected pose -- her shoulders drooping, she holds the baby across her lap in the manner of a pieta -- make the title bitterly ironic."

abominably  acerbically  acerbly  acidly  acridly