The politician's speech was full of empty rhetoric.
nonsensical babble
Frequency:
60
%
The professor's lecture was just nonsensical babble.
foolish talk
Frequency:
50
%
I dismissed his argument as foolish talk.
meaningless chatter
Frequency:
45
%
I couldn't stand listening to their meaningless chatter.
Idiomatic Expressions for claptrap
Phrase: claptrap rhetoric
Meaning: Empty, insincere, or nonsensical speech or writing
Usage: The politician's speech was filled with claptrap rhetoric that failed to address any real issues.