未知数儿 wèizhīshùr unknown Origin Definitions Defs Strokes Stroke Words Sentences Sents 未知 wèizhī adjectivenoun unknown not yet known; not yet understood数 數 shù nounnumeral number number; amount; quantity; figure儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.