1 Old HSK word(s): ☊牢骚 ** C
发牢骚* * 满腹牢骚* *

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

满 fill / full, satisfied
腹 stomach, belly, abdomen / inside
牢 prison / stable, pen / secure
骚 harass, bother, annoy, disturb
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual

Korean:
1 NHSK word(s): 牢骚* 6 lao2 sao1discontent/ complaint
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):