Comprehensive girl ultimately trapped by involving us in vice (9)
I believe the answer is:
inclusive
'comprehensive' is the definition.
('inclusive' can be similar in meaning to 'comprehensive')
'girl ultimately trapped by involving us in vice' is the wordplay.
'ultimately' indicates one should take the final letters.
'trapped by' indicates putting letters inside.
'involving' indicates anagramming the letters.
The final letter of 'girl' is 'l'.
'us'+'in'+'vice'='usinvice'
'usinvice' is an anagram of 'incusive'.
'l' placed into 'incusive' is 'INCLUSIVE'.
(Other definitions for inclusive that I've seen before include "Taking everything in" , "All-embracing" , "Counting both ends - PC language?" , "Not leaving any out" , "Allowing anyone to enter" .)