RichThesaurus
chowderheaded
vs
thick as champ
chowderheaded
adj
Stupid; foolish; lacking in common sense.
thick as champ
adj
Very ignorant or foolish, sullen or in a bad temper.
How often have the words
chowderheaded
and
thick as champ
occurred in a corpus of books?
(source:
Google Ngram Viewer
)