Don't drop this kind of phrase (5)
I believe the answer is:
catch
This clue could be a double definition.
'don't' is the first definition.
Both the answer and definition are singular nouns.
Maybe you can see an association between them that I don't see?
'drop this kind of phrase' is the second definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
Can you help me to learn more?
(Other definitions for catch that I've seen before include "Grasp - overtake - overhear - surprise" , "Understand" , "Stop the motion, of a ball say" , "Seize; start burning" , "Apprehend - drawback" .)