Not changing questionnaire for undergraduates? (7)
I believe the answer is:
uniform
'not changing' is the definition.
(I've seen this before)
'questionnaire for undergraduates?' is the wordplay.
'questionnaire' becomes 'form' (I've seen this in another clue).
'for' means one lot of letters go next to another (I've seen this in other clues).
'undergraduates?' becomes 'uni' (I can't justify this - if you can you should give a lot more credence to this answer).
'form' after 'uni' is 'UNIFORM'.
Can you help me to learn more?
(Other definitions for uniform that I've seen before include "Always the same, like army clothes" , "Dress of distinctive design worn by members of a group" , "Distinctive outfit" , "Steady, unchanging" , "Unchanging in form or character" .)