# reactivity

> English word · Noun · IPA /rɪˈakˈtɪvɪti/ · frequency rank #33,387

## Definitions
1. responsiveness to stimulation
2. relative susceptibility to chemical reaction

## Etymology
From reactive + -ity.

## Easily confused with
- **relativity** (https://plainspell.com/en/vs/reactivity-vs-relativity)
- **reactivate** (https://plainspell.com/en/vs/reactivate-vs-reactivity)

## Common misspellings (15)
`eractivity`, `raectivity`, `reacctivity`, `reacitvity`, `reactiivty`, `reactivitty`, `reactivityy`, `reactiviyt`, `reactivtiy`, `reactivvity`, `reacttivity`, `reactviity`, `reatcivity`, `recativity`, `rreactivity`

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