A piyyut or piyut (plural piyyutim or piyutim, Hebrew פּיּוּטִים / פיוטים, פּיּוּטִ / פיוט ; from Greek ποιητής poiétḗs "poet") is a Jewish liturgical poem, usually designated to be sung, chanted, or recited during religious services. Piyyutim have been written since Temple times.