Probably form the base of G3466; dull or stupid (as if shut up), that is, heedless, (morally) blockhead, (apparently) absurd: - fool (-ish, X -ishness).
Thayer's Dictionary
1) foolish
2) impious, godless
Part of Speech: adjective
A Related Word by Thayer’s/Strong’s Number: probably from the base of G3466