contumelious (adj.)youdaoicibaDictYouDict
late 15c., from Old French contumelieus, from Latin contumeliosus "reproachful, insolently abusive," from contumelia (see contumely).
insolent (adj.)youdaoicibaDictYouDict
late 14c., "contemptuous, arrogant, haughty," from Latin insolentem (nominative insolens) "arrogant, immoderate," literally "unusual," from in- "not, opposite of" (see in- (1)) + solentem, present participle of solere "be accustomed," which possibly is related to sodalis "close companion," and to suescere "become used to." Meaning "contemptuous of rightful authority" is from 1670s. Related: Insolently.