Definitions
Out of office. Used in email and calendar status to indicate that someone is away from work — on holiday, at a conference, or otherwise unavailable. Most email clients have a built-in "OOO auto-reply" feature that fires this notice back at anyone who emails you while you're away.
I'm OOO from Friday through next Wednesday — please loop in my colleague for anything urgent.
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Other words near "OOO" (O)
Browse all slang words starting with O.
Related terms
Semantically related
- OOTL64%
Out of the loop. Used to admit you don't know what a current discussion, joke, controversy or meme is referring to, usually as a polite preface to a question. Reddit has a dedicated r/OutOfTheLoop community built entirely around this opener.
- O.O.62%
(US, slang) A brief glance or visual examination (typically of a person).
- oo-er59%
(UK) An expression of surprise or befuddlement.
- sooo57%
A lengthened spelling of "so" used in texting and social posts to mark emphasis, drama, or anticipation. The number of O's scales with intensity — "sooo good" is mild, "sooooo good" is a level up. Has been universal across SMS, Twitter, TikTok captions, and Bluesky since at least the early 2010s.
- out of station56%
Indian English: out of town, away from one's usual city or workplace, typically for work or family reasons. Standard in corporate emails ("I will be out of station from Monday to Wednesday") and in formal phone messages. Originates from colonial-era military and railway parlance — a "station" was the cantonment or posting where a British officer was based, and being "out of station" meant temporarily absent from it. The phrase has long since lost its military edge and now simply means "away on a trip", but it remains specific to South Asian English; outsiders usually parse "out of station" as some sort of transport reference.