Strong's Greek Concordance

G3154: ματαιόω

mataióō · “to make futile”

Definition

to render (passively, become) foolish, i.e. (morally) wicked or (specially), idolatrous

KJV translates it as: become vain

Word origin: from G3152 (μάταιος);

Extended definition

ματαιόω, -ῶ
(μάταιος), [in LXX: 4Ki.17:15, Jer.2:5, al. הָבַל, etc. ;]
to make vain, foolish: Rom.1:21.†
(AS)

Abbott-Smith Manual Greek Lexicon (1922) via STEPBible TBESG (CC BY 4.0).

How G3154 is translated

  • they became futile ×1

Bible verses with G3154 (mataióō)

Mataióō appears in 1 verse.

  • Romans 1:21

    Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.