# uncertainty

> English word · Noun · IPA /ʌnˈsɜːtənti/ · frequency rank #6,852

## Definitions
1. Doubt; the condition of being uncertain or without conviction.
2. Something uncertain or ambiguous.
3. A parameter that measures the dispersion of a range of measured values.

## Etymology
From Middle English uncerteynte; equivalent to un- + certainty or uncertain + -ty.

## Easily confused with
- **uncertain** (https://plainspell.com/en/vs/uncertain-vs-uncertainty)

## Common misspellings (17)
`nucertainty`, `ucnertainty`, `unccertainty`, `unceratinty`, `uncerrtainty`, `uncertainnty`, `uncertaintty`, `uncertaintyy`, `uncertainyt`, `uncertaitny`, `uncertanity`, `uncertianty`, `uncerttainty`, `uncetrainty`, `uncretainty`, `unecrtainty`, `unncertainty`

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