恍然大悟

Explanation: Suddenly: suddenly sober look; Wu: he knew. Describe all of a sudden come to understand. 　　Usage: Partial official; as predicate, attributive, adverbial; described people suddenly realized something 　　Source: Original Song, Buddhism, Taoism, "Jing Chuan Deng recorded" Volume V: "Jane Meng advice, suddenly Dawu." 　　Examples: Zhuang Yuan Taishou and procurator heard before an ~, smiled at each other. (Qing Zhang Chunfan "officialdom" Seventeenth back) 　　Riddle: Show answers Thesaurus:  achieve mastery through a comprehensive study of the subject, draw inferences about other cases from one instance, suddenly see the light, be suddenly enlightened, Suddenly transfixion, Small clues tell, Gammer Nengjie, Corner of the three anti-, To know the micro-, sudden show of wit, understanding, etc （, That accounts for the milk in the cocoa -nut[coconut] Antonym Group:  Xi Yan Review, Learning rather than the police, Dream such as drunk, be imbeded in, s Dream Day, Trance, Gutengroufei, Hunqianmengying