ἔξειμι

A. sum), only used in impers. forms (v. ἔξεστι), exc. in αἰ ἐλεύθεροι μὴ ἐξεῖεν if [a woman] shall leave no free-born issue, Leg.Gort. 7.9.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project