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deffo.

Definite.

5 characters2 syllables approx.English language

Meaning & usage

adj/ˈdɛfəʊ/UK
  1. Definite.

    Australia · Canada · Ireland · UK · colloquial · usually
Where this word comes from

From definitely or definite + -o (diminutive suffix).

adv/ˈdɛfəʊ/UK
  1. Definitely.

    Australia · Canada · Ireland · UK · colloquial
    He told me that he's deffo going to be there tonight.
Where this word comes from

From definitely or definite + -o (diminutive suffix).

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deffo studiodeffo workshello, deffo

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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.