especially Alstonia constricta of New South Wales and Queensland. / Simarouba amara, a neotropical tree. / Petalostigma triloculare (long-leaved bitter bark), of Australia.

(figuratively) Something unpleasant that must be accepted or endured. / Used other than figuratively or idiomatically: see bitter pill, swallow.

(idiomatic) To accept positive things with negative things.

plural of bitter pill to swallow

(idiomatic) To accept or endure an unpleasant situation.

(rare) Alternative form of sugarcoat the pill

present participle of swallow a bitter pill

simple past tense and past participle of swallow a bitter pill

Third-person singular simple present indicative form of swallow a bitter pill

Both bitter and sweet. / Expressing contrasting emotions of pain and pleasure. / Of bittersweet color.