[sump.tu.ary] adj [L sumptuarius, fr. sumptus expense, fr. sumere to take, spend--more at consume] (1600) 1: relating to personal expenditures and esp. to prevent extravagance and luxury "conservative ~ tastes --John Cheever"
2: designed to regulate extravagant expenditures or habits esp. on moral or religious grounds "~ laws" "~ tax"