deffo

English

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deffo

  • /ˈdɛfəʊ/ UK

Where it comes from

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

adjective more deffo · most deffo

  1. Australia, Canada, Ireland, UK, colloquial, usually Definite. I know for certain they′re not speaking to each other, that′s for deffo, not that I′ve even seen them in the same room over the last week to confirm their silence.

adverb more deffo · most deffo

  1. Australia, Canada, Ireland, UK, colloquial Definitely. He told me that he's deffo going to be there tonight.

Talk about this word

Cite this
MLA

"deffo." Wiktionary, via Micwyn, micwyn.com/word/deffo. Accessed 6 Nov. 2026.

APA

deffo. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/deffo

Chicago

"deffo." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/deffo.

BibTeX
@misc{deffo_2026,
  title = {deffo},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/deffo},
  urldate = {2026-11-06}
}