Lexical Definition

‎ἐξουδενόω‎ exoudenóō (ex-oo-den-o'-o) be rejected ^G:V
from ‎ἐκ‎ and a derivative of the neuter of ‎οὐδείς‎

set at nought.

• to make utterly nothing of, i.e. despise

Abbott-Smith

† ἐξ-ουδενέω (Rec. -όω; T, -θενόω), -ῶ, [in LXX (with vv. ll. -όω, -θενέω, -θενόω) for בּוּז, בָּזָה, מָאַס, בּוּס, etc. ;]
to despise, set at nought: Mk 9:12 (cf. ἐξουθενέω).†

Abbott-Smith References

Liddell-Scott-Jones

ἐξουδενόω-όω,

set at naught, [LXX]

_{LSJ Scripture Refs: LXX.Josh.9.38}