嗖嗖 sōusōu whoosh Origin Definitions Defs Strokes Stroke Words Sentences Sents sōusōu whoosh · rustle 嗖 sōu reduplication whiz The sound of something moving past very quickly, such as a bullet, an arrow, or a gust of windsōusōu laughingly 嗖 sōu reduplication [smiling] (literary) (bound form) Used to describe the appearance of smiling.