Bip39 Vs Slip39. The passphrase is just not chosen from your predefined list of 2048 words – it can be any word or phrase you end up picking. Mnemonics are representation of entropy. Initial step requires making a call regarding the amount of entropy you consider Risk-free on your operations. https://thebookmarkid.com/story19594747/bip39-word-list-https-linktr-ee-bip39-the-2-minute-rule-for-bip39-word-list