--- title: "BIP39 Word #383: cool — Seed Phrase Mnemonic Word" url: "https://bip39-phrase.com/bip39-word/cool/" language: "en" updated: "2026-10-19T00:00:00+00:00" --- Word #383 00101111110 # cool — BIP39 word #383 "**cool**" is word #383 of the 2048 words in the official BIP39 English wordlist, between [cook](/bip39-word/cook/) and [copper](/bip39-word/copper/). In a seed phrase it stands for the 11-bit value `00101111110`, decimal index 382\. /kuːl/ · _adjective:_ fairly cold in a pleasant way, or calm [Russian](/ru/ "The BIP39 wordlist with Russian translations"): прохладный ## Binary Representation Seven 1-bits and four 0-bits; 330 of the 2048 indexes have exactly seven 1-bits. One wrong bit turns it into (leftmost bit first): [quit](/bip39-word/quit/)[hurt](/bip39-word/hurt/)[average](/bip39-word/average/)[divert](/bip39-word/divert/)[chief](/bip39-word/chief/)[cloth](/bip39-word/cloth/)[column](/bip39-word/column/)[conduct](/bip39-word/conduct/)[consider](/bip39-word/consider/)[convince](/bip39-word/convince/)[copper](/bip39-word/copper/) Position Hex Index 0x17E 4-Letter Prefix cool ## About "cool" in BIP39 - It takes all four letters to identify "cool": **"coo"** also begins [cook](/bip39-word/cook/). ## Word #383 in the Other 9 BIP39 Wordlists [Czech](/czech/) groteska [French](/french/) chignon [Italian](/italian/) comune [Japanese](/japanese/) きおう [Korean](/korean/) 대략 [Portuguese](/portuguese/) cansado [Spanish](/spanish/) champú [Traditional Chinese](/chinese-traditional/) 影 [Simplified Chinese](/chinese-simplified/) 影 ## Similar Words — Check Carefully During Recovery 5 BIP39 words differ from "cool" by just a single letter — the most common source of typos when a seed phrase is entered by hand: [coil](/bip39-word/coil/)[cook](/bip39-word/cook/)[pool](/bip39-word/pool/)[tool](/bip39-word/tool/)[wool](/bip39-word/wool/) Read aloud, "cool" /kuːl/ is one sound away from these 3 words: [call /kɔːl/](/bip39-word/call/)[rule /ruːl/](/bip39-word/rule/)[school /skuːl/](/bip39-word/school/) Words sharing the first three letters "coo": [cook](/bip39-word/cook/) ## More BIP39 Words Starting with "C" [ #379 consider ](/bip39-word/consider/)[ #380 control ](/bip39-word/control/)[ #381 convince ](/bip39-word/convince/)[ #382 cook ](/bip39-word/cook/)[ #384 copper ](/bip39-word/copper/)[ #385 copy ](/bip39-word/copy/)[ #386 coral ](/bip39-word/coral/)[ #387 core ](/bip39-word/core/) [View all words starting with "C" ](/bip39-words/c/) ## Seed phrase, key and recovery guides - [Metal Seed Phrase Backup: Steel Plates, Tiles and Tests](/metal-seed-phrase-backup/) - [Invalid Seed Phrase? How to Find and Fix a Wrong Word (BIP39)](/how-to-fix-seed-phrase-errors/) - [Ethereum Keystore File (JSON Wallet): Structure and Security](/json-wallets-explained/) [ Full BIP39 Wordlist ](/)