通宵達旦 Save Sign in to save words Simplified: 通宵达旦 tōngxiāodádàn ㄊㄨㄥ ㄒㄧㄠ ㄉㄚˊ ㄉㄢˋ overnight until daybreak (idiom) all night long day and night Character by character 通(tōng)go through 宵(xiāo)night 達(dá)surname Da 旦(dàn)dawn A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0