---
title: "BIP39 Word #905: illegal — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/illegal/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #905 01110001000 

# illegal — BIP39 word #905

"**illegal**" is word #905 of the 2048 words in the official BIP39 English wordlist, between [ill](/bip39-word/ill/) and [illness](/bip39-word/illness/). In a seed phrase it stands for the 11-bit value `01110001000`, decimal index 904\. 

/ɪˈliːgəl/  · _adjective:_ not allowed by law 

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

## Binary Representation

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

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

[valve](/bip39-word/valve/)[country](/bip39-word/country/)[extra](/bip39-word/extra/)[genre](/bip39-word/genre/)[jungle](/bip39-word/jungle/)[insect](/bip39-word/insect/)[indoor](/bip39-word/indoor/)[hybrid](/bip39-word/hybrid/)[immense](/bip39-word/immense/)[image](/bip39-word/image/)[illness](/bip39-word/illness/) 

Position

Hex Index

0x388

4-Letter Prefix

ille

## About "illegal" in BIP39

- "illegal" has 7 letters, but the first four, **"ille"**, already identify it, because **"ill"** also begins [ill](/bip39-word/ill/) and [illness](/bip39-word/illness/).
- Its first letters also spell another BIP39 word, [ill](/bip39-word/ill/). Write "illegal" out in full: cut short, it turns into a different valid word.
- **"ille"** is unique only within the English list: it also begins illeso in the [Italian list](/italian/), so a four-letter backup should say which list it uses.

## Word #905 in the Other 9 BIP39 Wordlists

[Czech](/czech/) nachytat 

[French](/french/) genou 

[Italian](/italian/) lepre 

[Japanese](/japanese/) ずひょう 

[Korean](/korean/) 수년 

[Portuguese](/portuguese/) gargalo 

[Spanish](/spanish/) ilegal 

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

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

## Similar Words — Check Carefully During Recovery

Read aloud, "illegal" /ɪˈliːgəl/ is one sound away from this word: 

[legal /ˈliːgəl/](/bip39-word/legal/) 

Words sharing the first three letters "ill":

[ill](/bip39-word/ill/)[illness](/bip39-word/illness/) 

## More BIP39 Words Starting with "I"

[ #901 identify ](/bip39-word/identify/)[ #902 idle ](/bip39-word/idle/)[ #903 ignore ](/bip39-word/ignore/)[ #904 ill ](/bip39-word/ill/)[ #906 illness ](/bip39-word/illness/)[ #907 image ](/bip39-word/image/)[ #908 imitate ](/bip39-word/imitate/)[ #909 immense ](/bip39-word/immense/) 

[View all words starting with "I" ](/bip39-words/i/) 

## Seed phrase, key and recovery guides

- [Private Key QR Code Risks: Why Online Generators Are Unsafe](/qr-code-private-key-security-risks/)
- [Seed Phrase Formats by Network: BIP39 and the Exceptions](/seed-phrase-formats-by-network/)
- [BIP39 vs BIP32 vs BIP44: How the Seed Standards Fit Together](/crypto-seed-standards-bip39-vs-bip32-vs-bip44/)

[ Full BIP39 Wordlist ](/)