---
title: "BIP39 Word #1901: unique — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/unique/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1901 11101101100 

# unique — BIP39 word #1901

"**unique**" is word #1901 of the 2048 words in the official BIP39 English wordlist, between [uniform](/bip39-word/uniform/) and [unit](/bip39-word/unit/). In a seed phrase it stands for the 11-bit value `11101101100`, decimal index 1900\. 

/juːˈniːk/  · _adjective:_ being the only one of its kind, unlike anything else 

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

## Binary Representation

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

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

[horn](/bip39-word/horn/)[pulse](/bip39-word/pulse/)[snow](/bip39-word/snow/)[work](/bip39-word/work/)[tortoise](/bip39-word/tortoise/)[trumpet](/bip39-word/trumpet/)[usage](/bip39-word/usage/)[uncle](/bip39-word/uncle/)[unfair](/bip39-word/unfair/)[universe](/bip39-word/universe/)[unit](/bip39-word/unit/) 

Position

Hex Index

0x76C

4-Letter Prefix

uniq

## About "unique" in BIP39

- "unique" has 6 letters, but the first four, **"uniq"**, already identify it, because **"uni"** also begins [uniform](/bip39-word/uniform/), [unit](/bip39-word/unit/) and [universe](/bip39-word/universe/).
- The same spelling is in the [French BIP39 wordlist](/french/), but as word #1949 (index 1948), not #1901\. A wallet set to French reads "unique" as **11110011100** instead of **11101101100**, and decodes index 1900 as "torse".
- "unique" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #19 (word 9 of 12). Every official vector passes the [checksum checker](/bip39-checksum-checker/), and [How BIP39 works](/how-bip39-works/) shows how the entropy turns into such words.

Official test vector #19

[cat](/bip39-word/cat/) [swing](/bip39-word/swing/) [flag](/bip39-word/flag/) [economy](/bip39-word/economy/) [stadium](/bip39-word/stadium/) [alone](/bip39-word/alone/) [churn](/bip39-word/churn/) [speed](/bip39-word/speed/) unique [patch](/bip39-word/patch/) [report](/bip39-word/report/) [train](/bip39-word/train/) 

## Word #1901 in the Other 9 BIP39 Wordlists

[Czech](/czech/) vypustit 

[French](/french/) torse 

[Italian](/italian/) trovare 

[Japanese](/japanese/) もえる 

[Korean](/korean/) 하필 

[Portuguese](/portuguese/) tora 

[Spanish](/spanish/) trato 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "uni":

[uniform](/bip39-word/uniform/)[unit](/bip39-word/unit/)[universe](/bip39-word/universe/) 

## More BIP39 Words Starting with "U"

[ #1897 unfair ](/bip39-word/unfair/)[ #1898 unfold ](/bip39-word/unfold/)[ #1899 unhappy ](/bip39-word/unhappy/)[ #1900 uniform ](/bip39-word/uniform/)[ #1902 unit ](/bip39-word/unit/)[ #1903 universe ](/bip39-word/universe/)[ #1904 unknown ](/bip39-word/unknown/)[ #1905 unlock ](/bip39-word/unlock/) 

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

## Seed phrase, key and recovery guides

- [Cold Sharding: Splitting a Private Key Into Offline Shamir Shares](/cold-sharding-method-private-key-storage-strategy/)
- [Test Your Wallet Backup: A Self-Audit of Your Seed Phrase](/hack-own-crypto-wallet/)
- [EVM Address Format Explained: Structure & Usage](/format-evm-addresses/)

[ Full BIP39 Wordlist ](/)