עָפַשׁ , Pi. עִיפֵּשׁ to grow mouldy, decay. Pes. 15ᵇ; 45ᵇ הפת שעִיפְּשָׁה וכ׳ bread that is spoiled so as to be unfit for man to eat &c. Tosef. ib. II (III), 4 שעִיפְּשׁוּ או שיבשו which have become mouldy or dried up. Tosef. Ter. IX, 10 פת שעִיפֵּישָׁה (ed. Zuck.). Tanḥ. Mick. 7 פת … עִפְּשָׁה the bread in our vessels has become mouldy. Y. Yoma III, 41ᵃ bot. לא היתה מְעַפֶּשֶׁת it never grew mouldy; Bab. ib. 38ᵃ מִתְעַפֶּשֶׁת; Tosef. ib. II, 5; Y. Shek. V, 48ᵈ bot. מתע׳; a. e.
Hithpa. - הִתְעַפֵּשׁ,
Nithpa. - נִתְעַפֵּשׁ same, v. supra. Gen. R. s. 31 שלא ירקבו ולא יִתְעַפְּשׁוּ וכ׳ that they (the fruits in the ark) should not rot, or mould, or be disfigured.