---
title: "BIP39 Word #384: copper — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/copper/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #384 00101111111 

# copper — BIP39 word #384

"**copper**" is word #384 of the 2048 words in the official BIP39 English wordlist, between [cool](/bip39-word/cool/) and [copy](/bip39-word/copy/). In a seed phrase it stands for the 11-bit value `00101111111`, decimal index 383\. 

/ˈkɒpə/  · _noun:_ a soft reddish-brown metal that conducts electricity well 

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

## Binary Representation

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

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

[quiz](/bip39-word/quiz/)[husband](/bip39-word/husband/)[avocado](/bip39-word/avocado/)[divide](/bip39-word/divide/)[child](/bip39-word/child/)[cloud](/bip39-word/cloud/)[combine](/bip39-word/combine/)[confirm](/bip39-word/confirm/)[control](/bip39-word/control/)[cook](/bip39-word/cook/)[cool](/bip39-word/cool/) 

Position

Hex Index

0x17F

4-Letter Prefix

copp

## About "copper" in BIP39

- "copper" has 6 letters, but the first four, **"copp"**, already identify it, because **"cop"** also begins [copy](/bip39-word/copy/).
- **"copp"** is unique only within the English list: it also begins coppia in the [Italian list](/italian/), so a four-letter backup should say which list it uses.

## Word #384 in the Other 9 BIP39 Wordlists

[Czech](/czech/) guma 

[French](/french/) chimère 

[Italian](/italian/) conciso 

[Japanese](/japanese/) きおく 

[Korean](/korean/) 대량 

[Portuguese](/portuguese/) cantar 

[Spanish](/spanish/) chancla 

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

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

## Similar Words — Check Carefully During Recovery

Read aloud, "copper" /ˈkɒpə/ is one sound away from this word: 

[copy /ˈkɒpi/](/bip39-word/copy/) 

Words sharing the first three letters "cop":

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

## More BIP39 Words Starting with "C"

[ #380 control ](/bip39-word/control/)[ #381 convince ](/bip39-word/convince/)[ #382 cook ](/bip39-word/cook/)[ #383 cool ](/bip39-word/cool/)[ #385 copy ](/bip39-word/copy/)[ #386 coral ](/bip39-word/coral/)[ #387 core ](/bip39-word/core/)[ #388 corn ](/bip39-word/corn/) 

[View all words starting with "C" ](/bip39-words/c/) 

## Seed phrase, key and recovery guides

- [What Is BIP39? The Standard Behind Seed Phrases](/bip39-the-foundation-of-crypto-wallet-security/)
- [Seed Phrase Examples: 12, 18 and 24 BIP39 Mnemonic Phrases](/mnemonic-words-examples-for-crypto-security-bip39/)
- [How to Protect Your Crypto Wallet from Phishing](/protect-crypto-wallet-from-phishing/)

[ Full BIP39 Wordlist ](/)