0 Old HSK word(s):
信口开河/合* *

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

信 trust, believe / letter
口 mouth / open end / entrance, gate
开 open / initiate, begin, start
河 river / stream / yellow river
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual