thirty,1num.a.Tríocha (folld. by nom. sg.); deich (gcinn, nduine, etc.) fhichead, ar fhichid, is fiche. Thirty-five horses, cúig chapall is tríocha; cúig chapall déag ar fhichid, is fiche. 2num.s.(A) tríocha; a deich fichead, ar fhichid, is fiche. He is thirty, tá sé an deich is fiche. Thirty-one, -nine, a haon, a naoi, is tríocha; a haon, a naoi déag, ar fhichid, is fiche. The thirty-first of May, an t-aonú lá déag ar fhichid de Bhealtaine.