The Collaborative International Dictionary of English v.0.48:
Dissentious \Dis*sen"tious\, a. Marked by dissensions; apt to breed discord; quarrelsome; contentious; factious. -- Dis*sen"tious*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
dissentious adj 1: dissenting (especially dissenting with the majority opinion) [syn: dissentious, divisive, factious]