语塞

语塞	yǔ sè	to be at a loss for words / speechless
语	yǔ	dialect / language / speech
语	yù	(literary) to tell; to let (sb) know
塞	sāi	to plug; to stop up; to stuff in / (bound form) a stopper; a cork
塞	sài	(bound form) strategic stronghold
塞	sè	(bound form) to block; to obstruct