---
title: "BIP39 Word #645: explain — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/explain/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #645 01010000100 

# explain — BIP39 word #645

"**explain**" is word #645 of the 2048 words in the official BIP39 English wordlist, between [expire](/bip39-word/expire/) and [expose](/bip39-word/expose/). In a seed phrase it stands for the 11-bit value `01010000100`, decimal index 644\. 

/ɪksˈpleɪn/  · _verb:_ to make something clear by giving details or reasons 

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

## Binary Representation

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

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

[spatial](/bip39-word/spatial/)[awesome](/bip39-word/awesome/)[identify](/bip39-word/identify/)[dog](/bip39-word/dog/)[flat](/bip39-word/flat/)[fee](/bip39-word/fee/)[family](/bip39-word/family/)[face](/bip39-word/face/)[exotic](/bip39-word/exotic/)[express](/bip39-word/express/)[expose](/bip39-word/expose/) 

Position

Hex Index

0x284

4-Letter Prefix

expl

## About "explain" in BIP39

- "explain" has 7 letters, but the first four, **"expl"**, already identify it, because **"exp"** also begins [expand](/bip39-word/expand/), [expect](/bip39-word/expect/), [expire](/bip39-word/expire/), [expose](/bip39-word/expose/) and [express](/bip39-word/express/).
- **"expl"** is unique only within the English list: it also begins explorer in the [French list](/french/), explicar in the [Spanish list](/spanish/), explanar in the [Portuguese list](/portuguese/) and exploze in the [Czech list](/czech/), so a four-letter backup should say which list it uses.

## Word #645 in the Other 9 BIP39 Wordlists

[Czech](/czech/) koprovka 

[French](/french/) élitisme 

[Italian](/italian/) fermento 

[Japanese](/japanese/) こそだて 

[Korean](/korean/) 별명 

[Portuguese](/portuguese/) dormente 

[Spanish](/spanish/) esquí 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "exp":

[expand](/bip39-word/expand/)[expect](/bip39-word/expect/)[expire](/bip39-word/expire/)[expose](/bip39-word/expose/)[express](/bip39-word/express/) 

## More BIP39 Words Starting with "E"

[ #641 exotic ](/bip39-word/exotic/)[ #642 expand ](/bip39-word/expand/)[ #643 expect ](/bip39-word/expect/)[ #644 expire ](/bip39-word/expire/)[ #646 expose ](/bip39-word/expose/)[ #647 express ](/bip39-word/express/)[ #648 extend ](/bip39-word/extend/)[ #649 extra ](/bip39-word/extra/) 

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

## Seed phrase, key and recovery guides

- [Is My Seed Phrase Compromised? Signs and What to Do Next](/bip39-seed-phrase-compromise/)
- [BIP 32 Explained: Hierarchical Deterministic Wallets](/bip-32/)
- [Can You Guess a Seed Phrase? Probability and Real Risks](/can-you-guess-a-seed-phrase-probability-and-real-risks/)

[ Full BIP39 Wordlist ](/)