---
title: "BIP39 Word #603: ensure — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/ensure/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #603 01001011010 

# ensure — BIP39 word #603

"**ensure**" is word #603 of the 2048 words in the official BIP39 English wordlist, between [enroll](/bip39-word/enroll/) and [enter](/bip39-word/enter/). In a seed phrase it stands for the 11-bit value `01001011010`, decimal index 602\. 

/ɪnˈʃʊə/  · _verb:_ to make certain that something happens or is the case 

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

## 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):

[slender](/bip39-word/slender/)[area](/bip39-word/area/)[hero](/bip39-word/hero/)[forget](/bip39-word/forget/)[drive](/bip39-word/drive/)[exercise](/bip39-word/exercise/)[enable](/bip39-word/enable/)[engage](/bip39-word/engage/)[envelope](/bip39-word/envelope/)[enrich](/bip39-word/enrich/)[enter](/bip39-word/enter/) 

Position

Hex Index

0x25A

4-Letter Prefix

ensu

## About "ensure" in BIP39

- "ensure" has 6 letters, but the first three, **"ens"**, already identify it, because **"en"** also begins 20 other words, among them [enable](/bip39-word/enable/), [enact](/bip39-word/enact/), [end](/bip39-word/end/) and [endless](/bip39-word/endless/). Three letters are enough for only 604 of the 2048 words.

## Word #603 in the Other 9 BIP39 Wordlists

[Czech](/czech/) klubovna 

[French](/french/) droiture 

[Italian](/italian/) estonia 

[Japanese](/japanese/) こうおん 

[Korean](/korean/) 방안 

[Portuguese](/portuguese/) despesa 

[Spanish](/spanish/) embudo 

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

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

## More BIP39 Words Starting with "E"

[ #599 enlist ](/bip39-word/enlist/)[ #600 enough ](/bip39-word/enough/)[ #601 enrich ](/bip39-word/enrich/)[ #602 enroll ](/bip39-word/enroll/)[ #604 enter ](/bip39-word/enter/)[ #605 entire ](/bip39-word/entire/)[ #606 entry ](/bip39-word/entry/)[ #607 envelope ](/bip39-word/envelope/) 

[View all words starting with "E" ](/bip39-words/e/) 

## Seed phrase, key and recovery guides

- [Ethereum Keystore File (JSON Wallet): Structure and Security](/json-wallets-explained/)
- [What Is BIP39? The Standard Behind Seed Phrases](/bip39-the-foundation-of-crypto-wallet-security/)
- [Seed Phrase Examples: 12, 18 and 24 BIP39 Mnemonic Phrases](/mnemonic-words-examples-for-crypto-security-bip39/)

[ Full BIP39 Wordlist ](/)