In a decorous manner.

Marked by proper behavior.

The act of adorning, embellishing, or honoring; ornamentation. / Any item that adorns, enriches, or beautifies; something added by way of embellishment or ornamentation.

plural of decoration

(transitive) To furnish with decorations. / (transitive) To improve the appearance of an interior of, as a house, room, or office.

That serves to decorate

A plant, tile, etc. intended for use as decoration.

Someone who decorates. / (Britain) Painter and wallpaperer of buildings

simple past tense and past participle of decorate

Having had decorations applied; adorned with attractive items.