You may feel it’s common (5)
I believe the answer is:
sense
'you' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for sense that I've seen before include "Practicality, often common (5)" , "definition" , "Meaning of a word or expression" , "Perceive - feeling" , "Perceive; meaning" .)