# activity

> English word · Noun · IPA /ækˈtɪv.ɪ.ti/ · frequency rank #1,444

## Definitions
1. The state or quality of being active; activeness.
2. Something done as an action or a movement.
3. Something done for pleasure or entertainment, especially one involving movement or an excursion.
4. The lexical aspect (aktionsart) of verbs or predicates that change over time and have no natural end point.
5. The number of radioactive decays per unit time. Unit for it: becquerel or curie
6. The property of substances to react with other substances

## Etymology
From Middle French activité, from Latin activitas. Equivalent to active + -ity.

## Easily confused with
- **acidity** (https://plainspell.com/en/vs/acidity-vs-activity)
- **actively** (https://plainspell.com/en/vs/actively-vs-activity)
- **activist** (https://plainspell.com/en/vs/activist-vs-activity)
- **activate** (https://plainspell.com/en/vs/activate-vs-activity)
- **activism** (https://plainspell.com/en/vs/activism-vs-activity)

## Common misspellings (12)
`acctivity`, `acitvity`, `actiivty`, `activitty`, `activityy`, `activiyt`, `activtiy`, `activvity`, `acttivity`, `actviity`, `atcivity`, `cativity`

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