Bip39. Though there are BIP39 wordlists in languages besides English, it really is strongly not proposed to work with non-English words for wallet backups. It'd make restoring the wallet challenging or impossible. It is also discouraged to deliver words directly from thought and make use of a safe cryptographic functionality https://sirketlist.com/story20433704/ian-coleman-bip39-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work