sumptuous

UK: /ˈsʌmptjʊəs/ US: /ˈsʌmptʃuəs/ ,(sump′cho̅o̅ əs)

WordReference Random House Learner's Dictionary of American English © 2025

sump•tu•ous /ˈsʌmptʃuəs/   adj. 

1. requiring great expense;
   costly:
   a sumptuous room with gold paint.
2. lavish;
   splendid:
   a sumptuous feast.

See -sum-.

WordReference Random House Unabridged Dictionary of American English © 2025

sump•tu•ous  (sump′cho̅o̅ əs), adj. 

1. entailing great expense, as from choice materials, fine work, etc.;
   costly:
   a sumptuous residence.
2. luxuriously fine or large;
   lavish;
   splendid:
   a sumptuous feast.

• Latin sūmptuōsus, equivalent. to sūmptu(s) expense (see sumptuary) + -ōsus -ous
• 1475–85

sump′tu•ous•ly, adv. 
sump′tu•ous•ness, n. 
Synonyms

• 2. magnificent, luxurious, munificent.

Collins Concise English Dictionary © HarperCollins Publishers::

sumptuous / ˈsʌmptjʊəs/ adjective

1. expensive or extravagant: sumptuous costumes
2. magnificent; splendid: a sumptuous scene

Etymology: 16th Century: from Old French somptueux, from Latin sumptuōsus costly, from sumptus; see sumptuary

ˈsumptuously adverb

ˈsumptuousness, sumptuosity / ˌsʌmptjʊˈɒsɪtɪ/ noun