Sumptuous means splendid and expensive-looking. A sumptuous meal, sumptuous fabrics, sumptuous surroundings.
It is about visible cost rather than quality, which is why it suits interiors and banquets. The Latin behind it means expensive, and the related sumptuary laws once limited what each class was allowed to spend and wear.
1adjectivesumptuousSplendid and expensive-looking.
“The wedding guests enjoyed a sumptuous feast in the castle's great hall.”
sumptuous is a quality.
Latin sumptuosus means costly, from sumptus, expense, from sumere, to take up or spend.
Latin
sumptuōsus
Middle French
sumptueux
English, today
sumptuous
Built from
From Middle French sumptueux, from Latin sumptuōsus, from sūmptus (“cost, charge, expense”), from sumō + -tus.
Etymology from Wiktionary, CC BY-SA