Lexical Definition

‎ὑπερφρονέω‎ hyperphronéō (hoop-er-fron-eh'-o) be haughty ^G:V
from ‎ὑπέρ‎ and ‎φρονέω‎

think more highly.

• to esteem oneself overmuch, i.e. be vain or arrogant

Abbott-Smith

** ὑπερ-φρονέω, -ῶ [in LXX: IV Mac 13:1 14:11 16:2 * ;]
1. to be overproud, high-minded (Æsch.): μὴ ὑ. παρ’ ὃ δεῖ φρονεῖν (on the paranom., v. Vau., in l.), Ro 12:3.
2. to overlook, think slightly of (Thuc., Plat.).†

Abbott-Smith References

Liddell-Scott-Jones

ὑπερφρονέω-έω,

(ὑπέρφρων) to be over-proud, have high thoughts, μηδ᾽ ὑπερφρόνει [NT+4th c.BC+]: with dative modi, to be proud in or of a thing, πλούτῳ [Refs 5th c.BC+]

__2 with accusative, overlook, look down upon, despise, ὑπερφρονέωήσας τὸν παρόντα δαίμονα [ὑπερφρονέωεῖν 5th c.BC: Thucydides Historicus 3.39; ἑτέρους Aristeas 122 ">Refs 5th c.BC+]:—passive, to be despised, ὑπὸ τῶν εὐπραγούντων [Refs 5th c.BC+]
__3 with genitive, think slightly of, δαιμόνων [Refs 5th c.BC+]
__II surpass in knowledge, ὑ. ἱστορίᾳ τὸν δῆμον (variant for{περιφρ-}) [Refs 4th c.BC+] excel in all wisdom, [Refs 5th c.BC+]

_{LSJ Scripture Refs: Rom.12.3}