pick up on

US /pɪk ʌp ɑːn/
UK /pɪk ʌp ɑːn/
"pick up on" picture
1.

to notice or become aware of something

:
•
She was quick to pick up on his nervousness.
•
Did you pick up on any strange vibes from the new neighbor?
:
noticedetectdiscernperceivesense
2.

to understand something after it has been explained or demonstrated

:
•
It took him a while to pick up on the new software.
•
The students quickly picked up on the new grammar rules.
:
understandgrasplearncomprehendassimilate
:
pick uppick up the piecespick up the bill forpickpickingpick atpick on