---
title: "BIP39 Word #1639: smoke — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/smoke/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1639 11001100110 

# smoke — BIP39 word #1639

"**smoke**" is word #1639 of the 2048 words in the official BIP39 English wordlist, between [smile](/bip39-word/smile/) and [smooth](/bip39-word/smooth/). In a seed phrase it stands for the 11-bit value `11001100110`, decimal index 1638\. 

/sməʊk/  · _noun:_ the gray or black gas produced by something burning 

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

## Binary Representation

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

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

[error](/bip39-word/error/)[mimic](/bip39-word/mimic/)[under](/bip39-word/under/)[system](/bip39-word/system/)[shadow](/bip39-word/shadow/)[silver](/bip39-word/silver/)[solution](/bip39-word/solution/)[soccer](/bip39-word/soccer/)[slush](/bip39-word/slush/)[smart](/bip39-word/smart/)[smooth](/bip39-word/smooth/) 

Position

Hex Index

0x666

4-Letter Prefix

smok

## About "smoke" in BIP39

- "smoke" has 5 letters, but the first four, **"smok"**, already identify it, because **"smo"** also begins [smooth](/bip39-word/smooth/).
- "smoke" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #18 (word 6 of 24). 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 #18

[panda](/bip39-word/panda/) [eyebrow](/bip39-word/eyebrow/) [bullet](/bip39-word/bullet/) [gorilla](/bip39-word/gorilla/) [call](/bip39-word/call/) smoke [muffin](/bip39-word/muffin/) [taste](/bip39-word/taste/) [mesh](/bip39-word/mesh/) [discover](/bip39-word/discover/) [soft](/bip39-word/soft/) [ostrich](/bip39-word/ostrich/) [alcohol](/bip39-word/alcohol/) [speed](/bip39-word/speed/) [nation](/bip39-word/nation/) [flash](/bip39-word/flash/) [devote](/bip39-word/devote/) [level](/bip39-word/level/) [hobby](/bip39-word/hobby/) [quick](/bip39-word/quick/) [inner](/bip39-word/inner/) [drive](/bip39-word/drive/) [ghost](/bip39-word/ghost/) [inside](/bip39-word/inside/) 

## Word #1639 in the Other 9 BIP39 Wordlists

[Czech](/czech/) svatba 

[French](/french/) renvoi 

[Italian](/italian/) sfida 

[Japanese](/japanese/) ぴっちり 

[Korean](/korean/) 진리 

[Portuguese](/portuguese/) redonda 

[Spanish](/spanish/) ron 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "smo":

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

## More BIP39 Words Starting with "S"

[ #1635 slush ](/bip39-word/slush/)[ #1636 small ](/bip39-word/small/)[ #1637 smart ](/bip39-word/smart/)[ #1638 smile ](/bip39-word/smile/)[ #1640 smooth ](/bip39-word/smooth/)[ #1641 snack ](/bip39-word/snack/)[ #1642 snake ](/bip39-word/snake/)[ #1643 snap ](/bip39-word/snap/) 

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

## Seed phrase, key and recovery guides

- [How to View & Recover Bitcoin Wallet.dat Content](/how-to-view-and-recover-bitcoin-wallet-dat-content/)
- [Bitcoin Private Key Format: WIF, Base58 and Hex Explained](/private-key-btc/)
- [How to Encrypt a Seed Phrase: AES, XOR and Steganography](/seed-phrase-encrypting-with-aes-xor-and-steganography/)

[ Full BIP39 Wordlist ](/)