1: ματαιότης
(Strong's #3153 — Noun Feminine — mataiotes — mat-ah-yot'-ace )

"emptiness as to results," akin to mataios (see EMPTY , VAIN), is used (a) of the creation, Romans 8:20 , as failing of the results designed, owing to sin; (b) of the mind which governs the manner of life of the Gentiles, Ephesians 4:17; (c) of the "great swelling words" of false teachers, 2—Peter 2:18 .

Acts 14:15VAIN