μάτην (mátēnmat'-aneadverbin vain)
[Grk] μάτην LN: 89.54 GK: G3472
Derivation: accusative case of a derivative of the base of μασσάομαι (through the idea of tentative manipulation, i.e. unsuccessful search, or else of punishment);
Strong's: folly, i.e. (adverbially) to no purpose
KJV: --in vain.
See: μασσάομαι