0 Old HSK word(s):
嘀咕* * 犯嘀咕* * 咕* * 咕咕* *

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

咕 mumble, mutter, murmur / rumble
咕 mumble, mutter, murmur / rumble

Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
咕 5495 + 咕 + + mumble, mutter, murmur / rumble 口 古 Mouth 古 (ALTERTUM) gu1 +

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