Bip39 Seed Generator. Thanks to the cryptographic layout of BIP-39, a weak passphrase would not reduce the security of the other wallets or help expose the seed words. And you need to have written it down when you were hoping to keep an alternative open up to restore your accounts. https://sociallytraffic.com/story3646000/ian-coleman-bip39-https-linktr-ee-bip39-5-essential-elements-for-bip39-word-list