decently, properly, becomingly, decorously, quite well
Гости чинно сидели за большим столом.
The guests sat decorously at the large table.
Дети чинно шли парами по улице.
The children walked down the street in pairs, primly and decorously.
Гости вели себя чинно за праздничным столом.
The guests behaved decorously at the festive table.
