contentious
/kən-ˈten(t)-shəs/
adjective
likely to cause disagreement or argument
exhibiting an often perverse and wearisome tendency to quarrels and disputes
a contentious issue
belligerent bellicose pugnacious quarrelsome contentious mean having an aggressive or fighting attitude. belligerent often implies being actually at war or engaged in hostilities. bellicose suggests a disposition to fight.