Weekend Dad perhaps exposed as uppity sort (5)
I believe the answer is:
karen
'uppity sort' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'weekend dad perhaps exposed' is the wordplay.
'weekend' becomes 'k' (I've seen this in other clues).
'dad perhaps' becomes 'parent' (dad is a kind of parent).
'exposed' indicates the central letters (the inside of the word is exposed).
The centre of 'parent' is 'aren'.
'k'+'aren'='KAREN'
'as' is the link.
Can you help me to learn more?
(Other definitions for karen that I've seen before include "Girl's name - ethnic Thai in Burma" , "Girl" , "oriental language" , "Carpenter of note" , "One at home in 15 across [AARHUS]" .)