noun
zillion
ZIHL-yuhn
noun
1
An extremely large, unspecified number.
"I've told you a zillion times to lock the door."
"There must be a zillion emails in my inbox by now."
How to Use Zillion
Learner’s notesIn plain EnglishA made-up huge number, used for exaggeration rather than any precise amount.
When to use it
Informal and hyperbolic — never used in technical or formal contexts.
Common pairings
a zillion times
a zillion dollars
Word Forms
zillions plural
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Etymology
An invented word from around 1916, modeled loosely on "million," "billion," and "trillion" but with no exact value.