1. εἶθαρ · eithar — Beekes
εἶθαρ [adv.] ‘immediately’ (IL). «Ὁ» *ETYM Was the word originally a neuter noun in -ap? It is difficult to connect it with ἰθύς, which has a long i-; see Schwyzer: 350 arid 519 and Schwyzer 1950: 70. Incorrectly, Pok. 892; there is no etymology. — [Beekes, s.v. εἶθαρ, p. 427]