Strongs: G1500
G1500 @ εἰκῆ eikē i-kay' Probably from G1502 (through the idea of failure); idly that is without reason (or effect): - without a cause (in) vain (-ly.)
Matthew:5:22
Romans:13:4
1Corinthians:15:2
Galatians:3:4
Galatians:4:11
Colossians:2:18