---
title: "BIP39 Word #649: extra — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/extra/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #649 01010001000 

# extra — BIP39 word #649

"**extra**" is word #649 of the 2048 words in the official BIP39 English wordlist, between [extend](/bip39-word/extend/) and [eye](/bip39-word/eye/). In a seed phrase it stands for the 11-bit value `01010001000`, decimal index 648\. 

/ˈɛkstrə/  · _adjective:_ more than is usual, expected or necessary 

[Russian](/ru/ "The BIP39 wordlist with Russian translations"): дополнительный 

## Binary Representation

Three 1-bits and eight 0-bits; 165 of the 2048 indexes have exactly three 1-bits.

One wrong bit turns it into (leftmost bit first):

[speed](/bip39-word/speed/)[baby](/bip39-word/baby/)[illegal](/bip39-word/illegal/)[donate](/bip39-word/donate/)[flip](/bip39-word/flip/)[fence](/bip39-word/fence/)[fantasy](/bip39-word/fantasy/)[exotic](/bip39-word/exotic/)[face](/bip39-word/face/)[eyebrow](/bip39-word/eyebrow/)[eye](/bip39-word/eye/) 

Position

Hex Index

0x288

4-Letter Prefix

extr

## About "extra" in BIP39

- "extra" has 5 letters, but the first four, **"extr"**, already identify it, because **"ext"** also begins [extend](/bip39-word/extend/).
- **"extr"** is unique only within the English list: it also begins extraire in the [French list](/french/), extremo in the [Spanish list](/spanish/), extrato in the [Portuguese list](/portuguese/) and extrakt in the [Czech list](/czech/), so a four-letter backup should say which list it uses.

## Word #649 in the Other 9 BIP39 Wordlists

[Czech](/czech/) koroptev 

[French](/french/) emballer 

[Italian](/italian/) festivo 

[Japanese](/japanese/) こちょう 

[Korean](/korean/) 병원 

[Portuguese](/portuguese/) doutor 

[Spanish](/spanish/) estufa 

[Traditional Chinese](/chinese-traditional/) 徑 

[Simplified Chinese](/chinese-simplified/) 径 

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "ext":

[extend](/bip39-word/extend/) 

## More BIP39 Words Starting with "E"

[ #552 eager ](/bip39-word/eager/)[ #553 eagle ](/bip39-word/eagle/)[ #645 explain ](/bip39-word/explain/)[ #646 expose ](/bip39-word/expose/)[ #647 express ](/bip39-word/express/)[ #648 extend ](/bip39-word/extend/)[ #650 eye ](/bip39-word/eye/)[ #651 eyebrow ](/bip39-word/eyebrow/) 

[View all words starting with "E" ](/bip39-words/e/) 

## Seed phrase, key and recovery guides

- [BIP-444 (Now BIP 110): Reduced Data Temporary Softfork Explained](/bip-444-reduced-data-temporary-softfork/)
- [Metal Seed Phrase Backup: Steel Plates, Tiles and Tests](/metal-seed-phrase-backup/)
- [Invalid Seed Phrase? How to Find and Fix a Wrong Word (BIP39)](/how-to-fix-seed-phrase-errors/)

[ Full BIP39 Wordlist ](/)