Save Gender Feminine Usage Greek Mythology (Latinized), Polish, Portuguese Pronounced Pron. Day-Ah-Nair-Ah [key] Other Forms FormsDeïaneira, Deïanira, Deyanira Meaning & History Variant transcription of Deianira. This was the form used for the main belt asteroid 157 Dejanira (discovered in 1875 by French astronomer Alphonse Borrelly).