the word 'sumptuous' originates from the latin verb 'sumere', meaning 'to take or spend'. its past participle 'sumptus' gave rise to the latin noun 'sumptus', signifying 'expense' or 'cost'. the adjective 'sumptuosus' was formed in latin, literally meaning 'involving great expense'. entering english via old french 'somptueux', the term retained its core association with lavish spending and consumption, evolving to describe anything characterized by great, often luxurious, expense.

Structure: sumpt (take) + uous (adjective suffix) sumpt (from latin 'sumptus', past participle of 'sumere', meaning 'to take, spend, consume'); uous (a latin-derived adjectival suffix meaning 'full of, characterized by').