Bip39. Due to the cryptographic design and style of BIP-39, a weak passphrase won't reduce the protection of the opposite wallets or support reveal the seed words. Mnemonics are representation of entropy. Starting point includes creating a call as to exactly how much entropy you concentrate on Safe and sound https://social4geek.com/story5174319/bip-39-https-linktr-ee-bip39-top-guidelines-of-bip39-passphrase