---
title: "BIP39 Word #1905: unlock — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/unlock/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1905 11101110000 

# unlock — BIP39 word #1905

"**unlock**" is word #1905 of the 2048 words in the official BIP39 English wordlist, between [unknown](/bip39-word/unknown/) and [until](/bip39-word/until/). In a seed phrase it stands for the 11-bit value `11101110000`, decimal index 1904\. 

/ʌnˈlɒk/  · _verb:_ to open a lock using a key or code 

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

## Binary Representation

Six 1-bits and five 0-bits; 462 of the 2048 indexes have exactly six 1-bits.

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

[host](/bip39-word/host/)[puppy](/bip39-word/puppy/)[sock](/bip39-word/sock/)[wrap](/bip39-word/wrap/)[toward](/bip39-word/toward/)[tube](/bip39-word/tube/)[ugly](/bip39-word/ugly/)[upper](/bip39-word/upper/)[update](/bip39-word/update/)[unusual](/bip39-word/unusual/)[until](/bip39-word/until/) 

Position

Hex Index

0x770

4-Letter Prefix

unlo

## About "unlock" in BIP39

- "unlock" has 6 letters, but the first three, **"unl"**, already identify it, because **"un"** also begins 17 other words, among them [unable](/bip39-word/unable/), [unaware](/bip39-word/unaware/), [uncle](/bip39-word/uncle/) and [uncover](/bip39-word/uncover/). Three letters are enough for only 604 of the 2048 words.

## Word #1905 in the Other 9 BIP39 Wordlists

[Czech](/czech/) vyslovit 

[French](/french/) tournage 

[Italian](/italian/) tulipano 

[Japanese](/japanese/) もちろん 

[Korean](/korean/) 학기 

[Portuguese](/portuguese/) torrada 

[Spanish](/spanish/) tregua 

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

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

## More BIP39 Words Starting with "U"

[ #1901 unique ](/bip39-word/unique/)[ #1902 unit ](/bip39-word/unit/)[ #1903 universe ](/bip39-word/universe/)[ #1904 unknown ](/bip39-word/unknown/)[ #1906 until ](/bip39-word/until/)[ #1907 unusual ](/bip39-word/unusual/)[ #1908 unveil ](/bip39-word/unveil/)[ #1909 update ](/bip39-word/update/) 

[View all words starting with "U" ](/bip39-words/u/) 

## Seed phrase, key and recovery guides

- [BIP85: Derive Many Seed Phrases From One Seed](/bip85/)
- [How to View & Recover Bitcoin Wallet.dat Content](/how-to-view-and-recover-bitcoin-wallet-dat-content/)
- [Bitcoin Private Key Format: WIF, Base58 and Hex Explained](/private-key-btc/)

[ Full BIP39 Wordlist ](/)