RichThesaurus
two sandwiches short of a picnic
vs
unlettered
two sandwiches short of a picnic
unlettered
adj
not expressed in or marked with letters
not instructed in letters; not well educated; unable to read
How often have the words
two sandwiches short of a picnic
and
unlettered
occurred in a corpus of books?
(source:
Google Ngram Viewer
)