---
title: "BIP39 Word #1665: source — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/source/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1665 11010000000 

# source — BIP39 word #1665

"**source**" is word #1665 of the 2048 words in the official BIP39 English wordlist, between [soup](/bip39-word/soup/) and [south](/bip39-word/south/). In a seed phrase it stands for the 11-bit value `11010000000`, decimal index 1664\. 

/sɔːs/  · _noun:_ a place, person or thing from which something comes 

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

## 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):

[exotic](/bip39-word/exotic/)[mosquito](/bip39-word/mosquito/)[useless](/bip39-word/useless/)[scale](/bip39-word/scale/)[submit](/bip39-word/submit/)[staff](/bip39-word/staff/)[spirit](/bip39-word/spirit/)[speed](/bip39-word/speed/)[spatial](/bip39-word/spatial/)[space](/bip39-word/space/)[south](/bip39-word/south/) 

Position

Hex Index

0x680

4-Letter Prefix

sour

## About "source" in BIP39

- "source" has 6 letters, but the first four, **"sour"**, already identify it, because **"sou"** also begins [soul](/bip39-word/soul/), [sound](/bip39-word/sound/), [soup](/bip39-word/soup/) and [south](/bip39-word/south/).
- The same spelling is in the [French BIP39 wordlist](/french/), but as word #1802 (index 1801), not #1665\. A wallet set to French reads "source" as **11100001001** instead of **11010000000**, and decodes index 1664 as "rigide".

## Word #1665 in the Other 9 BIP39 Wordlists

[Czech](/czech/) tamhle 

[French](/french/) rigide 

[Italian](/italian/) simbolo 

[Japanese](/japanese/) ひれい 

[Korean](/korean/) 참기름 

[Portuguese](/portuguese/) resenha 

[Spanish](/spanish/) sable 

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

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

## Similar Words — Check Carefully During Recovery

"**source**" sounds exactly like [sauce](/bip39-word/sauce/): both are transcribed /sɔːs/. When a phrase is read aloud or dictated, spell this word out. 

Read aloud, "source" /sɔːs/ is one sound away from these 5 words: 

[course /kɔːs/](/bip39-word/course/)[force /fɔːs/](/bip39-word/force/)[horse /hɔːs/](/bip39-word/horse/)[sort /sɔːt/](/bip39-word/sort/)[sword /sɔːd/](/bip39-word/sword/) 

Words sharing the first three letters "sou":

[soul](/bip39-word/soul/)[sound](/bip39-word/sound/)[soup](/bip39-word/soup/)[south](/bip39-word/south/) 

## More BIP39 Words Starting with "S"

[ #1661 sort ](/bip39-word/sort/)[ #1662 soul ](/bip39-word/soul/)[ #1663 sound ](/bip39-word/sound/)[ #1664 soup ](/bip39-word/soup/)[ #1666 south ](/bip39-word/south/)[ #1667 space ](/bip39-word/space/)[ #1668 spare ](/bip39-word/spare/)[ #1669 spatial ](/bip39-word/spatial/) 

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

## Seed phrase, key and recovery guides

- [How to Create a Seed Phrase: Step-by-Step Guide and Examples](/create-a-seed-phrase/)
- [BIP 44 – Multi-Account Hierarchy for Deterministic Wallets](/bip-44-multi-account-hierarchy-for-deterministic-wallets/)
- [Electrum Seed vs BIP39: Why Other Wallets Reject It](/electrum-seed-vs-bip39/)

[ Full BIP39 Wordlist ](/)