---
title: "BIP39 Word #1745: sure — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/sure/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1745 11011010000 

# sure — BIP39 word #1745

"**sure**" is word #1745 of the 2048 words in the official BIP39 English wordlist, between [supreme](/bip39-word/supreme/) and [surface](/bip39-word/surface/). In a seed phrase it stands for the 11-bit value `11011010000`, decimal index 1744\. 

/ʃʊə/  · _adjective:_ completely certain about something 

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

## Binary Representation

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

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

[foam](/bip39-word/foam/)[old](/bip39-word/old/)[wheel](/bip39-word/wheel/)[skate](/bip39-word/skate/)[spirit](/bip39-word/spirit/)[task](/bip39-word/task/)[submit](/bip39-word/submit/)[swallow](/bip39-word/swallow/)[surround](/bip39-word/surround/)[surge](/bip39-word/surge/)[surface](/bip39-word/surface/) 

Position

Hex Index

0x6D0

4-Letter Prefix

sure

## About "sure" in BIP39

- It takes all four letters to identify "sure": **"sur"** also begins [surface](/bip39-word/surface/), [surge](/bip39-word/surge/), [surprise](/bip39-word/surprise/), [surround](/bip39-word/surround/) and [survey](/bip39-word/survey/).
- **"sure"** is unique only within the English list: it also begins sureño in the [Spanish list](/spanish/), so a four-letter backup should say which list it uses.

## Word #1745 in the Other 9 BIP39 Wordlists

[Czech](/czech/) uctivost 

[French](/french/) semence 

[Italian](/italian/) spranga 

[Japanese](/japanese/) べにいろ 

[Korean](/korean/) 출장 

[Portuguese](/portuguese/) saudade 

[Spanish](/spanish/) soledad 

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

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

## Similar Words — Check Carefully During Recovery

 One BIP39 word differs from "sure" by just a single letter — the most common source of typos when a seed phrase is entered by hand: 

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

Read aloud, "sure" /ʃʊə/ is one sound away from these 3 words: 

[share /ʃeə/](/bip39-word/share/)[shoe /ʃuː/](/bip39-word/shoe/)[shy /ʃaɪ/](/bip39-word/shy/) 

Words sharing the first three letters "sur":

[surface](/bip39-word/surface/)[surge](/bip39-word/surge/)[surprise](/bip39-word/surprise/)[surround](/bip39-word/surround/)[survey](/bip39-word/survey/) 

## More BIP39 Words Starting with "S"

[ #1741 sunset ](/bip39-word/sunset/)[ #1742 super ](/bip39-word/super/)[ #1743 supply ](/bip39-word/supply/)[ #1744 supreme ](/bip39-word/supreme/)[ #1746 surface ](/bip39-word/surface/)[ #1747 surge ](/bip39-word/surge/)[ #1748 surprise ](/bip39-word/surprise/)[ #1749 surround ](/bip39-word/surround/) 

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

## Seed phrase, key and recovery guides

- [EVM Address Format Explained: Structure & Usage](/format-evm-addresses/)
- [Is a Seed Phrase Case Sensitive? BIP39 Words vs Passphrase](/is-seed-phrase-case-sensitivity-really-important/)
- [BIP-444 (Now BIP 110): Reduced Data Temporary Softfork Explained](/bip-444-reduced-data-temporary-softfork/)

[ Full BIP39 Wordlist ](/)