烏兎匆々 うとそうそう Also written 烏兎匆匆, 烏兎怱々, 烏兎怱怱 Meanings Expression days and nights passing by quickly; months and years flying by; time flies Kanji 烏 crow; raven. Read as ウ. 兎 rabbit; hare 匆 rush; hurry; be flustered. Read as ソウ. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists