From the same root comes Avestan (yasna, “worship, sacrifice, prayer, veneration”). A yazata is accordingly "a being worthy of worship" or "a holy being." The word is etymologically related to Sanskrit यजति (yájati, “he worships, he sacrifices”), यजत (yajatá-, “worthy of worship, holy”), यजञ (yajñá, “sacrifice”), and is perhaps also related to Ancient Greek ἅγιος (hagios, “devoted to the gods, sacred, holy.”).
Avestan (yazata) became (yazad) or (yazd) (pl. (yazdān)) in Middle Iranian languages, continuing in New Persian as ایزد (izad).