Be inclined to adopt right fashion (5)
I believe the answer is:
trend
'fashion' is the definition.
(thesaurus)
'be inclined to adopt right' is the wordplay.
'be inclined' becomes 'tend' (I've seen this before**).
'to adopt' indicates putting letters inside.
'right' becomes 'r' (common abbreviation).
'tend' placed around 'r' is 'TREND'.
(Other definitions for trend that I've seen before include "Leaning; fashion" , "Become popular on social media" , "Current fashion" , "swing" , "Direction, tendency" .)