G3576 νωθρός (nōthrós)

KJV renderings: dull, slothful
Strong's definition: sluggish, i.e. (literally) lazy, or (figuratively) stupid
Derivation: from a derivative of G3541 (νόθος);

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