eternidad
/eteɾniˈdad/ · B1 · noun · f
eternity
♾️⏳ Etymology: Latin aeternitas, so eternidad is a near-twin of English eternity
Spanish -dad matches English -ty: eternidad = eternity, like ciudad = city and libertad = liberty. It is feminine, like every -dad noun: la eternidad. Stress falls on the last syllable: e-ter-ni-DAD.