ceremonious

The roasted leg or the saddle are the only forms of mutton permissible to serve at a ceremonious dinner.

"I thank you, General," the Jaguar answered, with a ceremonious bow.

Ladies stand upon strict and ceremonious etiquette with each other as regards both paying and receiving calls.

The grocer was going about on tip-toe in honor of the day, and was serving the dirty little urchins with ceremonious bows.