不速而至 bùsù'érzhì to arrive uninvited Origin Definitions Defs Strokes Stroke Words Sentences Sents 不速 bùsù uninvited uninvited or unexpected; usually describing a guest or an unwanted appearance而 ér particleconjunction [adverbial linker] Connects an adverb-like description to the following verb to show the manner, cause, or basis of an action.至 zhì conjunctionadverb to arrive (bound form) to arrive; to reach