0 Old HSK word(s):
通宵达旦* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

通 pass through, common, communicate
宵 night, evening, dark
达 arrive at, reach / intelligent / smooth, slippery
旦 dawn / morning / day
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual

Korean:
0 NHSK word(s):
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):