Divisive

1. (a.) Indicating division or distribution.

2. (a.) Creating, or tending to create, division, separation, or difference.

Thesaurus Entries

aggressive, bellicose, belligerent, bickering, combative, disputatious, eristic, factional, factious, irascible, irritable, litigious, partisan, polarizing, polemic, pugnacious, quarrelsome, shrewish, wrangling