---
title: "BIP39 Word #1752: sustain — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/sustain/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1752 11011010111 

# sustain — BIP39 word #1752

"**sustain**" is word #1752 of the 2048 words in the official BIP39 English wordlist, between [suspect](/bip39-word/suspect/) and [swallow](/bip39-word/swallow/). In a seed phrase it stands for the 11-bit value `11011010111`, decimal index 1751\. 

/səsˈteɪn/  · _verb:_ to keep something going over time, or to suffer an injury 

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

## Binary Representation

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

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

[foot](/bip39-word/foot/)[online](/bip39-word/online/)[wife](/bip39-word/wife/)[slab](/bip39-word/slab/)[spray](/bip39-word/spray/)[ten](/bip39-word/ten/)[suggest](/bip39-word/suggest/)[swim](/bip39-word/swim/)[surprise](/bip39-word/surprise/)[survey](/bip39-word/survey/)[suspect](/bip39-word/suspect/) 

Position

Hex Index

0x6D7

4-Letter Prefix

sust

## About "sustain" in BIP39

- "sustain" has 7 letters, but the first four, **"sust"**, already identify it, because **"sus"** also begins [suspect](/bip39-word/suspect/).
- **"sust"** is unique only within the English list: it also begins susto in the [Spanish list](/spanish/) and sustento in the [Portuguese list](/portuguese/), so a four-letter backup should say which list it uses.
- "sustain" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #20 (word 14 of 18). 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 #20

[light](/bip39-word/light/) [rule](/bip39-word/rule/) [cinnamon](/bip39-word/cinnamon/) [wrap](/bip39-word/wrap/) [drastic](/bip39-word/drastic/) [word](/bip39-word/word/) [pride](/bip39-word/pride/) [squirrel](/bip39-word/squirrel/) [upgrade](/bip39-word/upgrade/) [then](/bip39-word/then/) [income](/bip39-word/income/) [fatal](/bip39-word/fatal/) [apart](/bip39-word/apart/) sustain [crack](/bip39-word/crack/) [supply](/bip39-word/supply/) [proud](/bip39-word/proud/) [access](/bip39-word/access/) 

## Word #1752 in the Other 9 BIP39 Wordlists

[Czech](/czech/) uklidnit 

[French](/french/) serein 

[Italian](/italian/) srotolato 

[Japanese](/japanese/) へんたい 

[Korean](/korean/) 취업 

[Portuguese](/portuguese/) sediado 

[Spanish](/spanish/) sonoro 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "sus":

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

## More BIP39 Words Starting with "S"

[ #1748 surprise ](/bip39-word/surprise/)[ #1749 surround ](/bip39-word/surround/)[ #1750 survey ](/bip39-word/survey/)[ #1751 suspect ](/bip39-word/suspect/)[ #1753 swallow ](/bip39-word/swallow/)[ #1754 swamp ](/bip39-word/swamp/)[ #1755 swap ](/bip39-word/swap/)[ #1756 swarm ](/bip39-word/swarm/) 

[View all words starting with "S" ](/bip39-words/s/) 

## Seed phrase, key and recovery guides

- [How to Memorize a Seed Phrase: Color, Story and Palace Methods](/seed-phrase-memory/)
- [What Is a Seed Phrase? How a Recovery Phrase Works](/recovery-seed-phrase-guide/)
- [What Is a Bitcoin Address and How Does It Work?](/what-is-a-bitcoin-address/)

[ Full BIP39 Wordlist ](/)