ὑπέξ-ειμι · hypex-eimi — LSJ
withdraw gradually, withdraw, disappear, disappear gradually, make way for
withdraw gradually, Hdt. 4.120, 7.211: generally, withdraw, disappear, ὅταν μηθὲν ἔτι ὑπεξίῃ . . λυπηρόν Metrod. Fr. 28; of fire or snow, disappear gradually, Pl. Phd. 103d, 106a; of water, opp. ἐπιγίγνεσθαι, Arist. Pol. 1276a39: c. dat., make way for, τὰς ἕνας ἀρχὰς ταῖς νέαις ὑ. D. 25.20.
II go out to meet, against
go out to meet or against one, Hdt. 1.176 codd. (leg. ἐπεξ-).
2 issue forth from
issue forth from, θαλάμων Anon. ap. Suid.
III to be discharged
to be discharged, of the faeces, Archig. ap. Aët. 9.42.