|Noah Webster's Dictionary|
(a.) Suitable to a character, or to the time, place, and occasion; marked with decorum; becoming; proper; seemly; befitting; as, a decorous speech; decorous behavior; a decorous dress for a judge.
Decorous (1 Occurrence)
1 Timothy 3:2 The overseer then must be irreproachable, husband of one wife, sober, discreet, decorous, hospitable, apt to teach; (DBY)