2 Old HSK word(s): ☊顽固 ** C ☊顽强 ** C
顽* *

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

顽 obstinate, stubborn / recalcitrant

Hsk Characters: 顽 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
顽 987D + 頑 + + obstinate, stubborn / recalcitrant 页 元 Head2 元 (URSPRUNG) wan2 +

Korean:

頑 + 顽 완고할완 (원고하다 : stubborn, bigoted)
2 NHSK word(s): 顽固* 6 wan2 gu4stubborn/ obstinate 顽强* 6 wan2 qiang2tenacious/ hard to defeat
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
1 KOREAN Sentence(s):
顽皮的孩子们 + 건방진 아이들 keonbangjin a-ideul