English · Slang Attested

T.O.

In real, traceable use. Part of the curated seed collection; community review is coming.

Also seen as: tu

Meaning · English

The city of Toronto.

Where it’s used: Used American English

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “T.O.” mean?

The city of Toronto.

Is “T.O.” formal or informal?

T.O. is generally slang.

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