# extensive

> English word · Adjective · IPA /ɪkˈstɛn.sɪv/ · frequency rank #3,056

## Definitions
1. Having a great extent; covering a large area; vast.
2. Considerable in amount.
3. Serving to extend or lengthen; characterized by extension.
4. Having a combined system entropy that equals the sum of the entropies of the independent systems.

## Etymology
From late Middle English, borrowed from Late Latin extensīvus, from Latin extensus.

## Easily confused with
- **extensively** (https://plainspell.com/en/vs/extensive-vs-extensively)
- **expensive** (https://plainspell.com/en/vs/expensive-vs-extensive)
- **extension** (https://plainspell.com/en/vs/extension-vs-extensive)
- **excessive** (https://plainspell.com/en/vs/excessive-vs-extensive)
- **expansive** (https://plainspell.com/en/vs/expansive-vs-extensive)
- **extensible** (https://plainspell.com/en/vs/extensible-vs-extensive)

## Common misspellings (13)
`etxensive`, `exetnsive`, `extenisve`, `extennsive`, `extensiev`, `extensivve`, `extenssive`, `extensvie`, `extesnive`, `extnesive`, `exttensive`, `exxtensive`, `xetensive`

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