English · Slang Attested

umptillion

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

Meaning · English

An extremely large, unspecified number.

Where it’s used: Used American English

Examples

The cosmos is stranger than I can know: full of change, full of beauty. The rich tapestry of interlocking fields and forces weaves umptillion configurations, and every one is beautiful.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

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

Common questions

What does “umptillion” mean?

An extremely large, unspecified number.

Is “umptillion” formal or informal?

umptillion is generally slang.

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