Even forbid uni daring for inflexibility (8)
I believe the answer is:
obduracy
'inflexibility' is the definition.
(thesaurus)
'even forbid uni daring' is the wordplay.
'even' means one should take alternating letters (even-numbered letters are used).
'uni' becomes 'u' (U is an abbreviation for university).
'daring' becomes 'racy' (I've seen this in another clue).
The alternate letters of 'forbid' are 'obd'.
'obd'+'u'+'racy'='OBDURACY'
'for' acts as a link.
(Other definitions for obduracy that I've seen before include "Mulishness" , "Stubbornness" , "Refusal to give in" .)