---
title: "BIP39 Word #152: base — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/base/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #152 00010010111 

# base — BIP39 word #152

"**base**" is word #152 of the 2048 words in the official BIP39 English wordlist, between [barrel](/bip39-word/barrel/) and [basic](/bip39-word/basic/). In a seed phrase it stands for the 11-bit value `00010010111`, decimal index 151\. 

/beɪs/  · _noun:_ the lowest part or foundation on which something stands 

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

## 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):

[napkin](/bip39-word/napkin/)[fancy](/bip39-word/fancy/)[cream](/bip39-word/cream/)[actual](/bip39-word/actual/)[brain](/bip39-word/brain/)[black](/bip39-word/black/)[axis](/bip39-word/axis/)[become](/bip39-word/become/)[bar](/bip39-word/bar/)[bargain](/bip39-word/bargain/)[barrel](/bip39-word/barrel/) 

Position

Hex Index

0x097

4-Letter Prefix

base

## About "base" in BIP39

- It takes all four letters to identify "base": **"bas"** also begins [basic](/bip39-word/basic/) and [basket](/bip39-word/basket/).
- **"base"** is unique only within the English list: it also begins baseado in the [Portuguese list](/portuguese/), so a four-letter backup should say which list it uses.

## Word #152 in the Other 9 BIP39 Wordlists

[Czech](/czech/) cetka 

[French](/french/) assaut 

[Italian](/italian/) asino 

[Japanese](/japanese/) うかべる 

[Korean](/korean/) 과장 

[Portuguese](/portuguese/) apanhado 

[Spanish](/spanish/) arreglo 

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

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

## Similar Words — Check Carefully During Recovery

 One BIP39 word differs from "base" by just a single letter — the most common source of typos when a seed phrase is entered by hand: 

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

Read aloud, "base" /beɪs/ is one sound away from these 5 words: 

[boss /bɒs/](/bip39-word/boss/)[bus /bʌs/](/bip39-word/bus/)[chase /ʧeɪs/](/bip39-word/chase/)[face /feɪs/](/bip39-word/face/)[race /reɪs/](/bip39-word/race/) 

Words sharing the first three letters "bas":

[basic](/bip39-word/basic/)[basket](/bip39-word/basket/) 

## More BIP39 Words Starting with "B"

[ #148 bar ](/bip39-word/bar/)[ #149 barely ](/bip39-word/barely/)[ #150 bargain ](/bip39-word/bargain/)[ #151 barrel ](/bip39-word/barrel/)[ #153 basic ](/bip39-word/basic/)[ #154 basket ](/bip39-word/basket/)[ #155 battle ](/bip39-word/battle/)[ #156 beach ](/bip39-word/beach/) 

[View all words starting with "B" ](/bip39-words/b/) 

## Seed phrase, key and recovery guides

- [TON Seed Phrase: 24-Word Format vs 12-Word BIP39 Phrases](/seed-phrase-format-for-ton-wallets/)
- [Recover Lost Bitcoin: Find Wallet Backups and Seed Phrases](/recover-lost-bitcoin-find-wallet-backups/)
- [Seed Phrase vs Private Key: What's the Difference?](/seed-phrase-vs-private-key/)

[ Full BIP39 Wordlist ](/)