---
title: "BIP39 Word #42: ahead — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/ahead/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #42 00000101001 

# ahead — BIP39 word #42

"**ahead**" is word #42 of the 2048 words in the official BIP39 English wordlist, between [agree](/bip39-word/agree/) and [aim](/bip39-word/aim/). In a seed phrase it stands for the 11-bit value `00000101001`, decimal index 41\. 

/əˈhɛd/  · _adverb:_ in front, or further forward in space or time 

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

## 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):

[lunch](/bip39-word/lunch/)[early](/bip39-word/early/)[cement](/bip39-word/cement/)[benefit](/bip39-word/benefit/)[artwork](/bip39-word/artwork/)[abuse](/bip39-word/abuse/)[already](/bip39-word/already/)[aerobic](/bip39-word/aerobic/)[aisle](/bip39-word/aisle/)[air](/bip39-word/air/)[agree](/bip39-word/agree/) 

Position

Hex Index

0x029

4-Letter Prefix

ahea

## About "ahead" in BIP39

- Two letters are enough: no other BIP39 word begins with **"ah"**, which makes "ahead" one of only 34 words that can be told apart this early.

## Word #42 in the Other 9 BIP39 Wordlists

[Czech](/czech/) balza 

[French](/french/) adjectif 

[Italian](/italian/) agricolo 

[Japanese](/japanese/) あらすじ 

[Korean](/korean/) 강변 

[Portuguese](/portuguese/) adaptar 

[Spanish](/spanish/) afirmar 

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

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

## Similar Words — Check Carefully During Recovery

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

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

## More BIP39 Words Starting with "A"

[ #38 again ](/bip39-word/again/)[ #39 age ](/bip39-word/age/)[ #40 agent ](/bip39-word/agent/)[ #41 agree ](/bip39-word/agree/)[ #43 aim ](/bip39-word/aim/)[ #44 air ](/bip39-word/air/)[ #45 airport ](/bip39-word/airport/)[ #46 aisle ](/bip39-word/aisle/) 

[View all words starting with "A" ](/bip39-words/a/) 

## Seed phrase, key and recovery guides

- [Bitcoin Improvement Proposal (BIP): Process and Deployed BIP List](/bitcoin-improvement-proposal/)
- [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/)

[ Full BIP39 Wordlist ](/)