contumelious

[L. contumeliosus.]

1. Exhibiting contumely; rudely contemptuous; insolent; disdainful.

Scoffs, and scorns, and contumelious taunts.

Curving a contumelious lip.

2. Shameful; disgraceful. [Obs.] Dr. H. More.

-- Con·tu·me·li·ous·ly, adv. -- Con·tu·me·li·ous·ness, n.

adjective

1. Rude and disrespectful: assuming, assumptive, audacious, bold, boldfaced, brash, brazen, cheeky, familiar, forward, impertinent, impudent, insolent, malapert, nervy, overconfident, pert, presuming, presumptuous, pushy, sassy, saucy, smart. Informal brassy, flip, fresh, smart-alecky, snippety, snippy, uppish, uppity. Slang wise. See attitude/good attitude/bad attitude/neutral attitude, courtesy/discourtesy.
2. Of, relating to, or characterized by verbal abuse: abusive, invective, opprobrious, scurrilous, vituperative. See attack/defend, attitude/good attitude/bad attitude/neutral attitude.

The adjective has one meaning:

Meaning #1: arrogantly insolent