# nonlinear

> English word · Adjective · frequency rank #20,444

## Definitions
1. Not lying on a straight line.
2. Whose atoms do not lie in a straight line.
3. Having a product of independent variables, or a variable with an exponent not equal to one.
4. Whose output is not directly proportional to its input.
5. Erratic and unpredictable; tending to jump back and forth.

## Etymology
From non- + linear.

## Common misspellings (13)
`nnolinear`, `nnonlinear`, `nolninear`, `nonilnear`, `nonlienar`, `nonlinaer`, `nonlinearr`, `nonlinera`, `nonlinnear`, `nonllinear`, `nonlniear`, `nonnlinear`, `onnlinear`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nonlinear