bitter · pungent (of a smell or taste) strong and usually unpleasant; (of food or smoke) having a pungent smell or taste: · sour (of a taste) bitter like the ...

bitter (of a taste or smell) strong and usually unpleasant; (of food or drink) having a bitter taste. · sour (of a taste) like the taste of a lemon or of fruit ...

a strong, bitter, alcoholic liquid that is made from plants and added to other alcoholic drinks to give flavor

​(British English) [uncountable, countable] a type of beer with a dark colour and a strong bitter taste, that is very popular in England and Wales.

bitter is of multiple origins. Partly a word inherited from Germanic. Partly formed within English, by conversion. Etymons: bitter adj.

the fact of being very serious and unpleasant, with a lot of anger and hate involved. the bitterness of the conflict/dispute.

What does the adverb bitter mean? There is one meaning in OED's entry for the adverb bitter. See 'Meaning & use' for definition, usage, and quotation evidence.

in a way that shows feelings of sadness or anger. She wept bitterly. They complained bitterly. The development was bitterly opposed by the local community.

bitterly · ​in a way that shows that you feel sad or angry. She wept bitterly. They complained bitterly. The development was bitterly opposed by the local ...

bitter adjective (TASTE) ... having a slightly stinging, strong taste, not salty or sweet: The coffee was bitter.