sumptuous – (adjective) expensive, luxurious and/or amazing
sumptuously – (adverb) in a way that is rich and/or amazing
Our holiday meal consisted of a sumptuous variety of dishes.
The sitting room was a sumptuous collection of sofas with lots of comfortable cushions.
The princess looked great in a sumptuous silk dress.
We dined sumptuously in that new restaurant owned by the famous TV chef.
The palace was sumptuously decorated.