Only a muttonheaded fool would believe such nonsense.
muttonheaded behavior
Frequency:
60
%
His muttonheaded behavior cost him his job.
muttonheaded mistake
Frequency:
50
%
It was a muttonheaded mistake to overlook such a crucial detail.
muttonheaded decision
Frequency:
45
%
It was a muttonheaded decision to trust him with the project.
Idiomatic Expressions for muttonheaded
Phrase: muttonheaded decision
Meaning: refers to a decision that is foolish, illogical, or lacking in sound judgment
Usage: It was a muttonheaded decision to invest all his savings in that risky venture.