---
title: "BIP39 Word #1220: observe — Seed Phrase Mnemonic Word"
url: "https://bip39-phrase.com/bip39-word/observe/"
language: "en"
updated: "2026-10-19T00:00:00+00:00"
---

Word #1220 10011000011 

# observe — BIP39 word #1220

"**observe**" is word #1220 of the 2048 words in the official BIP39 English wordlist, between [obscure](/bip39-word/obscure/) and [obtain](/bip39-word/obtain/). In a seed phrase it stands for the 11-bit value `10011000011`, decimal index 1219\. 

/əbˈzɜːv/  · _verb:_ to watch someone or something carefully, or to notice 

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

## 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):

[blur](/bip39-word/blur/)[such](/bip39-word/such/)[reveal](/bip39-word/reveal/)[mask](/bip39-word/mask/)[motor](/bip39-word/motor/)[organ](/bip39-word/organ/)[omit](/bip39-word/omit/)[offer](/bip39-word/offer/)[ocean](/bip39-word/ocean/)[oblige](/bip39-word/oblige/)[obscure](/bip39-word/obscure/) 

Position

Hex Index

0x4C3

4-Letter Prefix

obse

## About "observe" in BIP39

- "observe" has 7 letters, but the first four, **"obse"**, already identify it, because **"obs"** also begins [obscure](/bip39-word/obscure/).
- **"obse"** is unique only within the English list: it also begins observer in the [French list](/french/) and observar in the [Spanish list](/spanish/), so a four-letter backup should say which list it uses.

## Word #1220 in the Other 9 BIP39 Wordlists

[Czech](/czech/) plastika 

[French](/french/) médecin 

[Italian](/italian/) palude 

[Japanese](/japanese/) つうじょう 

[Korean](/korean/) 온종일 

[Portuguese](/portuguese/) mansa 

[Spanish](/spanish/) náusea 

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

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

## Similar Words — Check Carefully During Recovery

Words sharing the first three letters "obs":

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

## More BIP39 Words Starting with "O"

[ #1216 obey ](/bip39-word/obey/)[ #1217 object ](/bip39-word/object/)[ #1218 oblige ](/bip39-word/oblige/)[ #1219 obscure ](/bip39-word/obscure/)[ #1221 obtain ](/bip39-word/obtain/)[ #1222 obvious ](/bip39-word/obvious/)[ #1223 occur ](/bip39-word/occur/)[ #1224 ocean ](/bip39-word/ocean/) 

[View all words starting with "O" ](/bip39-words/o/) 

## Seed phrase, key and recovery guides

- [What Is a Bitcoin Address and How Does It Work?](/what-is-a-bitcoin-address/)
- [How to Generate a BIP39 Seed Phrase with Dice, Step by Step](/seed-phrase-with-dice/)
- [Derivation Path Explained: What m/44'/0'/0'/0/0 Means](/derivation-path/)

[ Full BIP39 Wordlist ](/)