哑口

哑口	yǎ kǒu	as if dumb / speechless
哑	yā	(onom.) sound of cawing / sound of infant learning to talk / variant of 呀
哑	yǎ	mute; dumb; incapable of speech / (of a voice) hoarse; husky / (bound form) (of a bullet, bomb etc) dud
口	kǒu	mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls