His moral baseness was revealed when he cheated on his taxes.
utter baseness
Frequency:
60
%
The utter baseness of his behavior left everyone speechless.
complete baseness
Frequency:
45
%
The complete baseness of his actions shocked everyone.
Idiomatic Expressions for baseness
Phrase: appeal to the baseness of human nature
Meaning: to manipulate or exploit people's lowest instincts or desires
Usage: The politician's speech appealed to the baseness of human nature by stoking fear and hatred.