--- title: "BIP39 Word #1771: tail — Seed Phrase Mnemonic Word" url: "https://bip39-phrase.com/bip39-word/tail/" language: "en" updated: "2026-10-19T00:00:00+00:00" --- Word #1771 11011101010 # tail — BIP39 word #1771 "**tail**" is word #1771 of the 2048 words in the official BIP39 English wordlist, between [tag](/bip39-word/tag/) and [talent](/bip39-word/talent/). In a seed phrase it stands for the 11-bit value `11011101010`, decimal index 1770\. /teɪl/ · _noun:_ the part at the back end of an animal's body [Russian](/ru/ "The BIP39 wordlist with Russian translations"): хвост ## 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): [front](/bip39-word/front/)[outer](/bip39-word/outer/)[wool](/bip39-word/wool/)[snap](/bip39-word/snap/)[stem](/bip39-word/stem/)[sun](/bip39-word/sun/)[tent](/bip39-word/tent/)[sword](/bip39-word/sword/)[tape](/bip39-word/tape/)[tackle](/bip39-word/tackle/)[talent](/bip39-word/talent/) Position Hex Index 0x6EA 4-Letter Prefix tail ## About "tail" in BIP39 - "tail" has 4 letters, but the first three, **"tai"**, already identify it, because **"ta"** also begins 12 other words, among them [table](/bip39-word/table/), [tackle](/bip39-word/tackle/), [tag](/bip39-word/tag/) and [talent](/bip39-word/talent/). Three letters are enough for only 604 of the 2048 words. - **"tail"** is unique only within the English list: it also begins tailler in the [French list](/french/), so a four-letter backup should say which list it uses. ## Word #1771 in the Other 9 BIP39 Wordlists [Czech](/czech/) usilovat [French](/french/) sincère [Italian](/italian/) storico [Japanese](/japanese/) ほこる [Korean](/korean/) 캠페인 [Portuguese](/portuguese/) servo [Spanish](/spanish/) sujeto [Traditional Chinese](/chinese-traditional/) 悄 [Simplified Chinese](/chinese-simplified/) 悄 ## Similar Words — Check Carefully During Recovery 3 BIP39 words differ from "tail" by just a single letter — the most common source of typos when a seed phrase is entered by hand: [mail](/bip39-word/mail/)[rail](/bip39-word/rail/)[sail](/bip39-word/sail/) Read aloud, "tail" /teɪl/ is one sound away from these 5 words: [table /ˈteɪbl/](/bip39-word/table/)[tape /teɪp/](/bip39-word/tape/)[tell /tɛl/](/bip39-word/tell/)[tool /tuːl/](/bip39-word/tool/)[whale /weɪl/](/bip39-word/whale/) ## More BIP39 Words Starting with "T" [ #1768 table ](/bip39-word/table/)[ #1769 tackle ](/bip39-word/tackle/)[ #1770 tag ](/bip39-word/tag/)[ #1772 talent ](/bip39-word/talent/)[ #1773 talk ](/bip39-word/talk/)[ #1774 tank ](/bip39-word/tank/)[ #1775 tape ](/bip39-word/tape/)[ #1888 typical ](/bip39-word/typical/) [View all words starting with "T" ](/bip39-words/t/) ## Seed phrase, key and recovery guides - [Why You Should Never Create Your Own Seed Phrase](/why-you-should-never-create-your-own-seed-phrase/) - [12 vs 24 Word Seed Phrase: Which Is More Secure?](/12-vs-24-word-seed-phrase/) - [BIP 157 Client-Side Block Filtering: Compact Filters Explained](/bip-157-client-side-block-filtering/) [ Full BIP39 Wordlist ](/)