ξε-

Greek

Byzantine Greek ἐξε- (exe-) (example, the verb ἐξεκαθαρίζω (exekatharízō) > Greek ξεκαθαρίζω (xekatharízo)).^[1] The form from Ancient Greek ἐκ- (ek-), ἐξ- (ex-), through metanalysis with the temporal augment -ε- (-e-):

Ancient ἐκγράφω (ekgráphō), aorist indicative ἐξέγραψα (exégrapsa) becomes Modern ξέγραψα (xégrapsa), backformed present ξεγράφω (xegráfo)

Doublet of εκ- (ek-).

ξε-, ξέ- or ξ- • (xe-, xé- or x-)

un-, de- (expressing the opposite, cancellation or removal of a condition)
‎ξε- (xe-) + ‎κλειδώνω (kleidóno, “to lock”) → ‎ξεκλειδώνω (xekleidóno, “unlock”)

‎ξε- (xe-) + ‎μεθάω (metháo, “get drunk”) → ‎ξεμεθάω (xemetháo, “sober up”)

‎ξε- (xe-) + ‎καρφώνω (karfóno, “to nail”) → ‎ξεκαρφώνω (xekarfóno, “unnail”)

‎ξε- (xe-) + ‎ιδρώνω (idróno, “sweat”) → ‎ξεϊδρώνω (xeïdróno, “unsweat”)

‎ξε- (xe-) + ‎παπάς (papás, “priest”) → ‎ξέπαπας (xépapas, “defrocked priest”) ^[2]
compare to Όποιος παπάς ξεπαπάς κι αν έρθει στο χωριό, εγώ δεν πάω στην εκκλησία. ― Ópoios papás xepapás ki an érthei sto chorió, egó den páo stin ekklisía. ― Whoever priest and no/again priest comes to the village, I' m not going to church.
totally (intensifying)
‎ξε- (xe-) + ‎κουφαίνω (koufaíno, “deafen”) → ‎ξεκουφαίνω (xekoufaíno, “deafen completely”)
(subtraction little by little, or secretive sense)
‎ξε- (xe-) + ‎μακραίνω (makraíno, “distance myself”) → ‎ξεμακραίνω (xemakraíno, “distance myself little by little”)

ξε- based on pairs of opposite verbs like κλειδώνω (kleidóno, “lock”) - ξεκλειδώνω (xekleidóno, “unlock”)^[1]

ξε- or ξ- • (xe- or x-) (without recessive accent)

expressions with και (kai, “and”)

↑ ^1.0 ^1.1 ξε-, in Λεξικό της κοινής νεοελληνικής [Dictionary of Standard Modern Greek], Triantafyllidis Foundation, 1998 at the Centre for the Greek language
↑ ^2.0 ^2.1 ξέπαπας s.v. απόπαπας - Georgakas, Demetrius, 1908-1990 (1960-2009) A Modern Greek-English Dictionary, Centre for the Greek language