G3151 ματαιολόγος (mataiológos)

KJV renderings: vain talker
Strong's definition: an idle (i.e. senseless or mischievous) talker, i.e. a wrangler
Derivation: from G3152 (μάταιος) and G3004 (λέγω);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.