כָּסַל
From LSJ
Τὸν αὐτὸν αἰνεῖν καὶ ψέγειν ἀνδρὸς κακοῦ → Hominis mali est culpare, quem laudaverit → Den selben lobt und tadelt nur ein schlechter Mann
English (Strong)
a primitive root; properly, to be fat, i.e. (figuratively) silly: be foolish.