Presumably all disagreeing in corners (5)
I believe the answer is:
nooks
'corners' is the definition.
('nook' can be a synonym of 'corner')
I can't explain the rest of the clue.
(Other definitions for nooks that I've seen before include "Niches and crannies" , "out-of-the-way places" , "secluded parts" , "Alcoves" , "In security areas" .)