Meaning & use

undefined

adjective·Everyday

Last updated

Not clearly or precisely explained, determined, or specified.

See it in a sentence

The contract left the project's scope undefined, leading to disputes later.

In mathematics, division by zero is considered undefined.

A note on using this word

In mathematics and computer science, "undefined" has a precise technical meaning describing an operation or value with no assigned result.

Words with a similar meaning

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Words with an opposite meaning

Make it your own

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