Dictionary.com
Thesaurus.com
Jump to:
  • eff
    eff
    verb (used with or without object)
  • eff.
    eff.
    abbreviation
    efficient, efficiency.

eff

1 American  
[ef] / ɛf /

verb (used with or without object)

  1. fuck.

    Stop effing around and get to work!

    Eff you, you lout!


noun

  1. the word “fuck”; the f-word.

    peppering his speech with superfluous and highly offensive effs.

verb phrase

  1. eff off Go away!.

    Eff off and die, you piece of Martian scum!

eff. 2 American  

abbreviation

  1. efficient, efficiency.

  2. effective, effectiveness.


eff British  
/ ɛf /

verb

  1. taboo euphemism for fuck

    eff off

  2. slang to use obscene language

"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

Other Word Forms

Etymology

Origin of eff

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Almost everyone spells it out, saying “en eff tee.”

From The Verge • Jun. 6, 2022

“I spend good quality time with my husband, I like to go eff around in the garden for a while. I get massages. I get my toenails painted – whatever,” she says with a laugh.

From The Guardian • Sep. 25, 2020

Saints deserved far more than the square root of eff all they got from recent visits to Anfield and the Tottenham Hotspur Stadium, while Burnley have recently won at Old Trafford.

From The Guardian • Feb. 15, 2020

GMT07:35 35 mins: Worth noting that, improved as Chelsea have been, with Willian, Oscar and Hazard in particular doing good work, Cesc Fabregas has done the square root of eff all.

From The Guardian • Nov. 29, 2015

By dint of a little scraping he managed to draw one edge of it through the "eff" hole and the next moment he was examining the faded printing.

From Abe and Mawruss Being Further Adventures of Potash and Perlmutter by Glass, Montague

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "eff" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com