heedless

prop., of the nerves, , (Hipp., Arist.). dull sluggish Of the mind, , , : (v. Field, , 3 ff.) , (T, WH, txt., R, om.) , >, , ; of things, , (T, WH, txt., R, om.): , , ; , ; , .† dull stupid foolish Mt 5:22 7:26 23:17 19 Mt 25:2 3 8 I Co 3:18 4:10 Mk 7:13 II Ti 2:23 Tit 3:9 I Co 1:25 I Co 1:27 Notes παράδοσις ζητήσεις τὸ μ. τ. θεοῦ τὰ μ. τ. κόσμου

dull or stupid (as if shut up), i.e. heedless, (morally) blockhead, (apparently) absurd

fool(-ish, X -ishness)