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eff

[ ef ]
/ ɛf /
Slang.
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verb (used with or without object), interjection
fuck: Stop effing around and get to work!Eff you, you lout!
noun
the word “fuck”; the f-word: peppering his speech with superfluous and highly offensive effs.
Verb Phrases
eff off, Go away!: Eff off and die, you piece of Martian scum!
QUIZ
QUIZ YOURSELF ON OPPOSITES OF RED BEFORE YOU TURN SCARLET
We have a challenge that will make you blush: do you know the many words and ways to describe the opposite of red?
Question 1 of 7
Which of the following colors is used to symbolize AIR?

Origin of eff

1940–45; euphemism for fuck, with eff as spelled form of the name of the initial letter

Other definitions for eff (2 of 2)

eff.

abbreviation
efficient, efficiency.
effective, effectiveness.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use eff in a sentence

British Dictionary definitions for eff

eff
/ (ɛf) /

verb
euphemism for fuck taboo eff off
eff and blind slang to use obscene language

Derived forms of eff

effing, noun, adjective, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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