eff.
Synonym of fuck.
Meaning & usage
Synonym of fuck.
Eff off!
And he kept saying, "Effing this, effing that."
Where this word comes from
From the name of the letter f (see etymology 1), the initial letter of fuck. Compare pee.
To put into words; to express.
Where this word comes from
Back-formation from ineffable, ultimately from Latin effor (“utter”).
Alternative spelling of ef; the name of the Latin script letter F/f.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.