0 Old HSK word(s):
未尝不可* *

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

未 not yet / 8th terrestrial branch
尝 taste / experience, experiment
不 no, not / un- / negative prefix
可 may, can, -able / possibly
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual