Strong's #3155: maten (pronounced mat'-ane)

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:--in vain.

Thayer's Greek Lexicon:

́

matēn

1) in vain, fruitlessly

Part of Speech: adverb

Relation: accus. of a derivative of the base of G3145 (through the idea of tentative manipulation, i.e. unsuccessful search, or else of punishment)

Citing in TDNT: 4:523, 571

Usage:

This word is used 2 times:

 

Matthew 15:9: "But in vain they do worship me, teaching for doctrines the commandments of men."
Mark 7:7: "Howbeit in vain do they worship me, teaching for doctrines the commandments of men."