Bip39 Word List. The passphrase just isn't picked with the predefined list of 2048 words – it might be any word or phrase you end up picking. And you need to have penned it down if you were hoping to help keep a choice open to revive your accounts. From https://classifylist.com/story20441779/bip39-mnemonic-https-linktr-ee-bip39-a-review-of-bip39-generator