- εἰ
- εἰGrammatical information: pcle (wish, condition, question)Meaning: `if'Other forms: (Ion. Att., Arc.) beside αἰ (Aeol. Dor.), sometimes εἰκ, αἰκ (after οὑ : οὑκ), ἠ (Cypr. Dor.)Origin: XX [etym. unknown]Etymology: Uncertain. - For interjective origin of αἰ, partly also of εἰ Schwyzer-Debrunner 557 and 683. Also (with Brugmann-Thumb 616) a demonstrative εἰ `then' (cf. εἶ-τα), orig. lokative of the demonstrative *e-, o- (Schwyzer 550). See Schwyzer-Debrunner a. a. O.Page in Frisk: 1,450
Greek-English etymological dictionary (Ελληνικά-Αγγλικά ετυμολογική λεξικό). Robert S.P.. 2010.