0 New HSK word(s):

1 Old HSK word(s): D VS 确凿 * que4zao2 sicher, wahr, felsenfest, unbestreitbar

确凿 [que4 zao2]

felsenfest (Adj)
确凿无疑 [que4 zao2 wu2 yi2]

einwandfrei (Adj)