definition of
bitterly

[1] #1 bitterly r. with bitterness, in a resentful manner; "she complained bitterly". wn

[2] #2 bitterly r. indicating something hard to accept; "he was bitterly disappointed". wn

[3] #3 bitterly r. [piercingly, bitingly, bitter] extremely and sharply; "it was bitterly cold"; "bitter cold". wn