fool'-er-i:
The plural "fooleries" occurs Ecclesiasticus 22:13 King James Version: "Talk not much with a fool.... and thou shalt never be defiled with his fooleries." The Greek word is entinagmos, "a striking or throwing in," "an attack," from entinasso, "to strike into," "cast at," etc. (/APC 1Macc 2:36; 2Macc 4:41; 11:11). the Revised Version (British and American) renders "Thou shalt not be defiled in his onslaught," margin "defiled: in his onslaught turn." The meaning is most probably "with what he throws out," i.e. his foolish or vile speeches, as if it were slaver.