Hates seeing sights with son not about (7)

I believe the answer is:

detests

I'm a little stuck... Click here to teach me more about this clue!

'hates' is the definition.
('detest' can be a synonym of 'hate')

I don't understand the remainder of the clue.

(Other definitions for detests that I've seen before include "Abhors" , "Cordially loathe" , "Hates" , "Loathes" , "Abominates" .)

I've seen this clue in The Everyman puzzle in The Observer.

Want a hint initially instead of a full solution? Install my app