Terrible flaw restricts university (5)
I believe the answer is:
awful
'terrible flaw restricts university' is the definition.
I can't judge whether this defines the answer.
'terrible flaw restricts university' is the wordplay.
'terrible' is an anagram indicator.
'restricts' is an insertion indicator.
'university' becomes 'u' (abbreviation for university).
'flaw' with letters rearranged gives 'awfl'.
'awfl' going around 'u' is 'AWFUL'.
Can you help me to learn more?
(Other definitions for awful that I've seen before include "Really terrible, ghastly" , "Dreadful, nasty" , "Dreadful - spine-chilling" , "Very embarrassing" , "Dreadful and dire" .)