Nick is fit (11)
I believe the answer is:
appropriate
I believe this is a double definition.
'nick' is the first definition.
(thesaurus)
'is fit' is the second definition.
('appropriate' can be similar in meaning to 'fit')
(Other definitions for appropriate that I've seen before include "Meet" , "Apt" , "Steal - suitable" , "lift" , "Fit" .)