---
title: "BIP39 Word #1170: mutual — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/mutual/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1170 10010010001 

# mutual — BIP39 word #1170

"**mutual**" is word #1170 of the 2048 words in the official BIP39 English wordlist, between [must](/bip39-word/must/) and [myself](/bip39-word/myself/). In a seed phrase it stands for the 11-bit value `10010010001`, decimal index 1169\. 

/ˈmjuːtjʊəl/  · _adjective:_ felt or done equally by two or more people toward each other 

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

## Binary Representation

Four 1-bits and seven 0-bits; 330 of the 2048 indexes have exactly four 1-bits.

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

[banana](/bip39-word/banana/)[split](/bip39-word/split/)[rate](/bip39-word/rate/)[lion](/bip39-word/lion/)[olive](/bip39-word/olive/)[normal](/bip39-word/normal/)[mother](/bip39-word/mother/)[nasty](/bip39-word/nasty/)[naive](/bip39-word/naive/)[mystery](/bip39-word/mystery/)[must](/bip39-word/must/) 

Position

Hex Index

0x491

4-Letter Prefix

mutu

## About "mutual" in BIP39

- "mutual" has 6 letters, but the first three, **"mut"**, already identify it, because **"mu"** also begins 9 other words, among them [much](/bip39-word/much/), [muffin](/bip39-word/muffin/), [mule](/bip39-word/mule/) and [multiply](/bip39-word/multiply/). Three letters are enough for only 604 of the 2048 words.
- **"mutu"** is unique only within the English list: it also begins mutuel in the [French list](/french/), so a four-letter backup should say which list it uses.

## Word #1170 in the Other 9 BIP39 Wordlists

[Czech](/czech/) pantofle 

[French](/french/) lueur 

[Italian](/italian/) orecchino 

[Japanese](/japanese/) だんわ 

[Korean](/korean/) 영국 

[Portuguese](/portuguese/) listagem 

[Spanish](/spanish/) momia 

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

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

## More BIP39 Words Starting with "M"

[ #1069 machine ](/bip39-word/machine/)[ #1166 museum ](/bip39-word/museum/)[ #1167 mushroom ](/bip39-word/mushroom/)[ #1168 music ](/bip39-word/music/)[ #1169 must ](/bip39-word/must/)[ #1171 myself ](/bip39-word/myself/)[ #1172 mystery ](/bip39-word/mystery/)[ #1173 myth ](/bip39-word/myth/) 

[View all words starting with "M" ](/bip39-words/m/) 

## Seed phrase, key and recovery guides

- [Bitcoin Improvement Proposal (BIP): Process and Deployed BIP List](/bitcoin-improvement-proposal/)
- [TON Seed Phrase: 24-Word Format vs 12-Word BIP39 Phrases](/seed-phrase-format-for-ton-wallets/)
- [Recover Lost Bitcoin: Find Wallet Backups and Seed Phrases](/recover-lost-bitcoin-find-wallet-backups/)

[ Full BIP39 Wordlist ](/)