Insult about English dexterity (7)
I believe the answer is:
sleight
'dexterity' is the definition.
(I know that dexterity can be written as sleight)
'insult about english' is the wordplay.
I cannot really see how this works, but
'english' could be 'e' (abbreviation) and 'e' is found in the answer.
'insult' could be 'slight' (I've seen this before) and 'slight' is located in the leftover letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sleight that I've seen before include "It's deceiving to the eye" , "distraction?" , "Conjuror uses this" , "Cunning action" , "Skilful deception" .)