dullard

n.笨蛋

dudgeon, duds, due, due to, duel, duellist, duenna, duet, duff, duffer, duffle (also duffel), duffle bag, duffle-coat, dug, dug-out, duke, dukedom, dulcet, dulcimer, dull, dullness, dully, duly, dumb, dumb show, dumb waiter, dumb-bell, dumbfound (also dumfound), dumbly, dumbness, dumdum, dummy, dummy run, dump, dumper, dumpiness, dumping, dumpling, dumps, dumpy,