# assure

> English word · Verb · IPA /əˈʃɔː(ɹ)/ · frequency rank #6,438

## Definitions
1. To make sure and secure; ensure.
2. To give (someone) confidence in the trustworthiness of (something).
3. To guarantee, promise (to do something).
4. To reassure.

## Etymology
From Old French asseurer (Modern French assurer), from Latin ad- + securus (“secure”). Cognate with Spanish asegurar. Doublet of assecure.

## Easily confused with
- **azure** (https://plainspell.com/en/vs/assure-vs-azure)
- **astute** (https://plainspell.com/en/vs/assure-vs-astute)
- **assured** (https://plainspell.com/en/vs/assure-vs-assured)
- **assume** (https://plainspell.com/en/vs/assume-vs-assure)
- **absurd** (https://plainspell.com/en/vs/absurd-vs-assure)
- **assert** (https://plainspell.com/en/vs/assert-vs-assure)
- **ashore** (https://plainspell.com/en/vs/ashore-vs-assure)
- **aspire** (https://plainspell.com/en/vs/aspire-vs-assure)
- **allure** (https://plainspell.com/en/vs/allure-vs-assure)
- **Asbury** (https://plainspell.com/en/vs/asbury-vs-assure)
- **assumed** (https://plainspell.com/en/vs/assumed-vs-assure)
- **assuage** (https://plainspell.com/en/vs/assuage-vs-assure)

## Common misspellings (6)
`assrue`, `assuer`, `assurre`, `asure`, `asusre`, `sasure`

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