swarē

Part of speech: adverb
in vain; without a cause
Etymology
[The etymology is unclear]
Concordance
sware - Matth. V, 22; Mrk. VII, 7; Rom. XIII, 4; Cor. I, XV, 2; XV, 14; XV, 17; Cor. II, VI, 1; Galat. II, 2; II, 21 etc
swarei - Cor. II, VI, 1