---
title: "BIP39 Word #852: heavy — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/heavy/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #852 01101010011 

# heavy — BIP39 word #852

"**heavy**" is word #852 of the 2048 words in the official BIP39 English wordlist, between [heart](/bip39-word/heart/) and [hedgehog](/bip39-word/hedgehog/). In a seed phrase it stands for the 11-bit value `01101010011`, decimal index 851\. 

/ˈhɛvi/  · _adjective:_ weighing a lot and hard to lift or move 

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

## 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):

[tuna](/bip39-word/tuna/)[clerk](/bip39-word/clerk/)[engine](/bip39-word/engine/)[kidney](/bip39-word/kidney/)[give](/bip39-word/give/)[hover](/bip39-word/hover/)[half](/bip39-word/half/)[hidden](/bip39-word/hidden/)[helmet](/bip39-word/helmet/)[health](/bip39-word/health/)[heart](/bip39-word/heart/) 

Position

Hex Index

0x353

4-Letter Prefix

heav

## About "heavy" in BIP39

- "heavy" has 5 letters, but the first four, **"heav"**, already identify it, because **"hea"** also begins [head](/bip39-word/head/), [health](/bip39-word/health/) and [heart](/bip39-word/heart/).
- "heavy" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #24 (word 8 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 #24

[void](/bip39-word/void/) [come](/bip39-word/come/) [effort](/bip39-word/effort/) [suffer](/bip39-word/suffer/) [camp](/bip39-word/camp/) [survey](/bip39-word/survey/) [warrior](/bip39-word/warrior/) heavy [shoot](/bip39-word/shoot/) [primary](/bip39-word/primary/) [clutch](/bip39-word/clutch/) [crush](/bip39-word/crush/) [open](/bip39-word/open/) [amazing](/bip39-word/amazing/) [screen](/bip39-word/screen/) [patrol](/bip39-word/patrol/) [group](/bip39-word/group/) [space](/bip39-word/space/) [point](/bip39-word/point/) [ten](/bip39-word/ten/) [exist](/bip39-word/exist/) [slush](/bip39-word/slush/) [involve](/bip39-word/involve/) [unfold](/bip39-word/unfold/) 

## Word #852 in the Other 9 BIP39 Wordlists

[Czech](/czech/) mistr 

[French](/french/) forcer 

[Italian](/italian/) insieme 

[Japanese](/japanese/) じゆう 

[Korean](/korean/) 성적 

[Portuguese](/portuguese/) flora 

[Spanish](/spanish/) haz 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "hea":

[head](/bip39-word/head/)[health](/bip39-word/health/)[heart](/bip39-word/heart/) 

## More BIP39 Words Starting with "H"

[ #848 hazard ](/bip39-word/hazard/)[ #849 head ](/bip39-word/head/)[ #850 health ](/bip39-word/health/)[ #851 heart ](/bip39-word/heart/)[ #853 hedgehog ](/bip39-word/hedgehog/)[ #854 height ](/bip39-word/height/)[ #855 hello ](/bip39-word/hello/)[ #856 helmet ](/bip39-word/helmet/) 

[View all words starting with "H" ](/bip39-words/h/) 

## Seed phrase, key and recovery guides

- [EVM Address Format Explained: Structure & Usage](/format-evm-addresses/)
- [Is a Seed Phrase Case Sensitive? BIP39 Words vs Passphrase](/is-seed-phrase-case-sensitivity-really-important/)
- [BIP-444 (Now BIP 110): Reduced Data Temporary Softfork Explained](/bip-444-reduced-data-temporary-softfork/)

[ Full BIP39 Wordlist ](/)