Lexical Definition

‎κυρόω‎ kyróō (koo-ro'-o) to affirm ^G:V
from the same as ‎κύριος‎

confirm.

• to make authoritative, i.e. ratify

Abbott-Smith

κυρόω, -ῶ (< κῦρος, 1. authority. 2. validity), [in LXX for קום;]
to confirm, ratify, make valid: II Co 2:8; pass., Ga 3:15 (cf. προ-κυρόω).†

Abbott-Smith References

Liddell-Scott-Jones

κυρόω,

future -ώσω [Refs 5th c.BC+]: (κῦρος):— confirm, ratify, δόμοις.. τήνδ᾽ ἐκύρωσας φάτιν [Refs 4th c.BC+]; ταῦτα Hdt.[same place]; τὸν γάμον [Refs 5th c.BC+]:—middle, accomplish one's end, λόγῳ κυροῦται τὰ πάντα [Refs 5th c.BC+], compare d:—passive, to be ratified, determined, ἐκεκύρωτο ὁ γάμος Κλεισθένεϊ [Refs 5th c.BC+]; τοὺς κυρωθέντας [τῶν νόμων] [Refs 5th c.BC+]; of a contract, to be sanctioned, [Refs 3rd c.BC+]; in auctions, to be knocked down, [Refs 2nd c.BC+]; ὁ κυρωθείς the highest bidder, to whom an object is knocked down, [Refs 3rd c.BC+]; at what point hath the end been fixed or determined? [Refs 5th c.BC+]; πρὶν κεκυρῶσθαι σφαγάς before it has been accomplished, [Refs]infinitive, ἐκεκύρωτο συμβάλλειν it had been decided to fight, [Refs 5th c.BC+]

__2 κ. δίκην decide it, [Refs 4th c.BC+]
__3 with accusative et infinitive, decree or ordain that.., τηρηθῆναι τὸν νόμον [Refs 4th c.BC+]
__4 of arguments or doctrines, confirm, establish, [Refs 1st c.BC+]; κ. ὅτι.. [Refs]