Decorous
Decorous (dek"or*us or de*kō"rus; 277) , adjective
[Latin decōrus, from decor comeliness, beauty; akin to decere. See Decent, and compare Decorum.]
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.
A decorous pretext the war.