in vain

Strong’s Dictionary of Greek Words:

Greek:
μάτην
Transliteration:
maten
Phonic:
mat’-ane
Meaning:
accusative case of a derivative of the base of 3145 (through the idea of tentative manipulation, i.e. unsuccessful search, or else of punishment); folly, i.e. (adverbially) to no purpose
KJV Usage:
in vain