Bip39. Due to the cryptographic style of BIP-39, a weak passphrase isn't going to reduce the safety of another wallets or support reveal the seed words. Of course, BIP39 passphrases are scenario-sensitive. Be sure to enter your passphrase just when you established it up, like any uppercase or lowercase letters. https://bookmarktiger.com/story18980991/bip39-list-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf