slow on the uptake
Adjective
Meaning
slow on the uptake
(colloquial, idiomatic) Of a person, slow to comprehend or process intellectually.
Antonym: quick on the uptake
Synonyms
obtuse
simple-minded
unintelligent
slow-witted
cretinous
boneheaded
thickheaded
wooden-headed
dull-witted
chuckleheaded
thick-headed