bitter

American  

[bit-er] / ˈbɪt ər /

adjective

bitterer, bitterest

1. having a harsh, disagreeably acrid taste, like that of aspirin, quinine, wormwood, or aloes.

   Synonyms:

   distasteful, unpalatable, acrid

2. producing one of the four basic taste sensations; not sour, sweet, or salt.

3. hard to bear; grievous; distressful.

   a bitter sorrow.

   Synonyms:

   painful, poignant

4. causing pain; piercing; stinging.

   a bitter chill.

   Synonyms:

   nipping, biting

5. characterized by intense antagonism or hostility.

   bitter hatred.

   Synonyms:

   relentless, ruthless, cruel, fierce

6. hard to admit or accept.

   a bitter lesson.

7. resentful or cynical.

   bitter words.

   Synonyms:

   scornful, sardonic, biting, caustic, acrimonious

---

noun

1. that which is bitter; bitterness.

   Learn to take the bitter with the sweet.

2. British. a very dry ale having a strong taste of hops.

verb (used with object)

1. to make bitter.

   herbs employed to bitter vermouth.

adverb

1. extremely; very; exceedingly.

   a bitter cold night.

bitter British  

/ ˈbɪtə /

adjective

1. having or denoting an unpalatable harsh taste, as the peel of an orange or coffee dregs Compare sour

2. showing or caused by strong unrelenting hostility or resentment

   he was still bitter about the divorce

3. difficult or unpleasant to accept or admit

   a bitter blow

4. cutting; sarcastic

   bitter words

5. bitingly cold

   a bitter night

---

adverb

1. very; extremely (esp in the phrase bitter cold )

noun

1. a thing that is bitter

2. beer with a high hop content, with a slightly bitter taste

verb

1. to make or become bitter

bitter Idioms  

More idioms and phrases containing bitter

• take the bitter with the sweet

---

Other Word Forms

• bitterish adjective
• bitterly adverb
• bitterness noun
• nonbitter adjective
• overbitter adjective
• overbitterly adverb
• unbitter adjective

Etymology

Origin of bitter

First recorded before 1000; Middle English, Old English biter; cognate with German bitter, Old Norse bitr, Gothic baitrs; akin to bite

Example Sentences

While potassium salt has a similar flavor, it can develop a slightly bitter taste when heated.

From Science Daily • Mar. 31, 2026

Ordained a priest in 2002, she became the first female Bishop of London in 2018, only four years after the church began allowing women bishops after years of bitter factional wrangling.

From Barron's • Mar. 25, 2026

Four years ago, they were the unstoppable dream team, now they are the bitter rivals in a drawn out battle where only one survives.

From BBC • Mar. 24, 2026

He isn’t bitter about the way things ended, he said.

From The Wall Street Journal • Mar. 23, 2026

The wind shifted to the north and blew bitter cold.

From "Black Star, Bright Dawn" by Scott O'Dell

Related Words

• acrimonious
• biting
• caustic
• fierce
• hateful
• intense
• rancorous
• resentful
• severe
• sour
• stinging
• vitriolic