Definition of twit

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twit    (twt) KEY 

TRANSITIVE VERB:
twit·ted, twit·ting, twits

To taunt, ridicule, or tease, especially for embarrassing mistakes or faults. See Synonyms at ridicule.

NOUN:

1. The act or an instance of twitting.
2. A reproach, gibe, or taunt.
3. Slang A foolishly annoying person.

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ETYMOLOGY:
Short for obsolete atwite, from Middle English atwiten, from Old English ætwtan : æt, at ; see at¹ + wtan, to reproach; see weid- in Indo-European roots

OTHER FORMS:
twitter(Noun)