应声 yìngshēngyīngshēng at the sound Origin Definitions Defs Strokes Stroke Words Sentences Sents 应声虫 yìngshēngchóng yes-man An opinionless person who echoes whatever others say; derived from a legendary parasite that repeats its host's words.应声而倒 yìngshēng'érdǎo to fall down at a sound To fall down immediately after a sound (such as a gunshot or impact) is heard; to collapse instantly