Added 10 October 2026
foo
/fuː/ noun
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about foo at Wordnik → Where our words come from →
- Alternative form of fu: an administrative subdivision of imperial China; the capital of such divisions.
noun
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A metasyntactic variable used to represent an unspecified entity. If part of a series of such entities, it is often the first in the series, and followed immediately by bar.
Suppose we have two objects, foo and bar.
- Alternative letter-case form of Foo (“placeholder god”).
interjection
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Expression of disappointment or disgust.
Oh foo – the cake burnt!
noun
Origin
From Mandarin 府 (fǔ).
From Wiktionary, via Kaikki.org (CC BY-SA)