不知凡几 bùzhīfánjǐ innumerable Definitions Defs Origin Strokes Stroke Words Sentences Sents 不知 bùzhī verb not to know to not know; to be unaware of or have no idea about凡 fán altogether altogether; in total; sums up a total quantity几 幾 jǐ numeral how many Used as a question word to ask about a quantity, time, or order, usually when the expected number is small (ten or fewer).