the.com/divisiveness

means The quality of causing disagreement or splitting people into opposing camps.

from Traces back to Latin dividere, 'to force apart' — from di- (apart) plus videre's cousin root meaning 'to split.' The '-ive' and '-ness' are later English scaffolding, turning a verb about cutting into an abstract noun about the state of being cut apart. The word itself, fittingly, took centuries to settle — English borrowed 'divide' first, then built 'divisive' and 'divisiveness' on top as needed, each suffix adding another layer of distance from the original clean cut.