• risiphone,
• fisiphone,
• gisiphone,
• yisiphone,
• 6isiphone,
• 5isiphone,
• tusiphone,
• tjsiphone,
• tksiphone,
• tosiphone,
• t9siphone,
• tiziphone,
• tispihone,
• tissiphone,
• disiphone,
• tasiphone,
• tisyphone,
• tisephone,
• tichiphone,
• tisupone

The plural form of the word "tisiphone" is "tisiphones".

The singular form of the word "tisiphone" is "tisiphone" itself. "Tisiphone" is a proper noun referring to one of the Erinyes or Furies from Greek mythology and does not have a commonly used singular form.