boob

nouns

an ignorant or foolish person
boob, booby, dope, dumbbell, dummy, pinhead
either of two soft fleshy milk-secreting glandular organs on the chest of a woman
boob, bosom, breast, knocker, tit, titty

verbs

commit a faux pas or a fault or make a serious mistake
"I blundered during the job interview"
blunder, boob, drop the ball, goof, sin