---
title: "BIP39 Word #454: december — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/december/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #454 00111000101 

# december — BIP39 word #454

"**december**" is word #454 of the 2048 words in the official BIP39 English wordlist, between [decade](/bip39-word/decade/) and [decide](/bip39-word/decide/). In a seed phrase it stands for the 11-bit value `00111000101`, decimal index 453\. 

/dɪˈsɛmbə/  · _noun:_ the twelfth and last month of the year 

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

## Binary Representation

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

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

[reward](/bip39-word/reward/)[judge](/bip39-word/judge/)[board](/bip39-word/board/)[chunk](/bip39-word/chunk/)[cost](/bip39-word/cost/)[device](/bip39-word/device/)[deny](/bip39-word/deny/)[defy](/bip39-word/defy/)[deal](/bip39-word/deal/)[decline](/bip39-word/decline/)[decade](/bip39-word/decade/) 

Position

Hex Index

0x1C5

4-Letter Prefix

dece

## About "december" in BIP39

- "december" has 8 letters, but the first four, **"dece"**, already identify it, because **"dec"** also begins [decade](/bip39-word/decade/), [decide](/bip39-word/decide/), [decline](/bip39-word/decline/), [decorate](/bip39-word/decorate/) and [decrease](/bip39-word/decrease/).
- **"dece"** is unique only within the English list: it also begins decennio in the [Italian list](/italian/), so a four-letter backup should say which list it uses.

## Word #454 in the Other 9 BIP39 Wordlists

[Czech](/czech/) hovor 

[French](/french/) cosmique 

[Italian](/italian/) definito 

[Japanese](/japanese/) ぎろん 

[Korean](/korean/) 많이 

[Portuguese](/portuguese/) cimento 

[Spanish](/spanish/) corcho 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "dec":

[decade](/bip39-word/decade/)[decide](/bip39-word/decide/)[decline](/bip39-word/decline/)[decorate](/bip39-word/decorate/)[decrease](/bip39-word/decrease/) 

## More BIP39 Words Starting with "D"

[ #450 deal ](/bip39-word/deal/)[ #451 debate ](/bip39-word/debate/)[ #452 debris ](/bip39-word/debris/)[ #453 decade ](/bip39-word/decade/)[ #455 decide ](/bip39-word/decide/)[ #456 decline ](/bip39-word/decline/)[ #457 decorate ](/bip39-word/decorate/)[ #458 decrease ](/bip39-word/decrease/) 

[View all words starting with "D" ](/bip39-words/d/) 

## Seed phrase, key and recovery guides

- [How to Restore a Wallet From a Seed Phrase: Step by Step](/restore-wallet-from-seed-phrase/)
- [xpub, ypub and zpub: Extended Public Keys Explained](/xpub-ypub-zpub/)
- [SLIP-39 vs BIP39: Shamir Backup and 20-Word Shares Explained](/slip39-vs-bip39/)

[ Full BIP39 Wordlist ](/)