---
title: "BIP39 Word #1644: sniff — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/sniff/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1644 11001101011 

# sniff — BIP39 word #1644

"**sniff**" is word #1644 of the 2048 words in the official BIP39 English wordlist, between [snap](/bip39-word/snap/) and [snow](/bip39-word/snow/). In a seed phrase it stands for the 11-bit value `11001101011`, decimal index 1643\. 

/snɪf/  · _verb:_ to breathe in quickly through your nose, often to smell something 

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

## Binary Representation

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

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

[estate](/bip39-word/estate/)[miracle](/bip39-word/miracle/)[uniform](/bip39-word/uniform/)[talent](/bip39-word/talent/)[shell](/bip39-word/shell/)[siren](/bip39-word/siren/)[sorry](/bip39-word/sorry/)[small](/bip39-word/small/)[social](/bip39-word/social/)[snake](/bip39-word/snake/)[snap](/bip39-word/snap/) 

Position

Hex Index

0x66B

4-Letter Prefix

snif

## About "sniff" in BIP39

- "sniff" has 5 letters, but the first three, **"sni"**, already identify it, because **"sn"** also begins [snack](/bip39-word/snack/), [snake](/bip39-word/snake/), [snap](/bip39-word/snap/) and [snow](/bip39-word/snow/). Three letters are enough for only 604 of the 2048 words.

## Word #1644 in the Other 9 BIP39 Wordlists

[Czech](/czech/) svodidlo 

[French](/french/) requin 

[Italian](/italian/) sfogo 

[Japanese](/japanese/) ひなん 

[Korean](/korean/) 진행 

[Portuguese](/portuguese/) refogar 

[Spanish](/spanish/) rosa 

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

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

## More BIP39 Words Starting with "S"

[ #1640 smooth ](/bip39-word/smooth/)[ #1641 snack ](/bip39-word/snack/)[ #1642 snake ](/bip39-word/snake/)[ #1643 snap ](/bip39-word/snap/)[ #1645 snow ](/bip39-word/snow/)[ #1646 soap ](/bip39-word/soap/)[ #1647 soccer ](/bip39-word/soccer/)[ #1648 social ](/bip39-word/social/) 

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

## Seed phrase, key and recovery guides

- [Seed Phrase Scams: How Thieves Get Your Recovery Words](/seed-phrase-scams/)
- [How to Store a Seed Phrase: Paper, Steel and Safe Locations](/store-a-seed-phrase/)
- [How to Restore a Wallet From a Seed Phrase: Step by Step](/restore-wallet-from-seed-phrase/)

[ Full BIP39 Wordlist ](/)