0 Old HSK word(s):
正儿八经* *

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

正 right, proper, correct
儿 son, child / KangXi radical 10
八 eight / all around, all sides
经 classic works / pass through
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual