Scrutinise test in English (7)
I believe the answer is:
examine
'scrutinise' is the definition.
(I know that scrutinise is a more specific form of the action examine)
'test in english' is the wordplay.
'test' becomes 'exam' (synonyms).
'english' becomes 'E' (abbreviation).
'exam'+'in'+'e'='EXAMINE'
(Other definitions for examine that I've seen before include "research" , "Inspect, peruse closely" , "Question, test" , "Test or study carefully" , "Question closely" .)