be slow on the uptake
US /bi sloʊ ɑn ðə ˈʌpˌteɪk/
UK /bi sloʊ ɑn ðə ˈʌpˌteɪk/
1.
to be slow to understand something
:
•
He tends to be slow on the uptake, so you might need to explain it twice.
•
Don't worry if you are slow on the uptake; some concepts just take more time.