tumulous

[too-myuh-luh s, tyoo-]
Also tu·mu·lose [too-myuh-lohs, tyoo-] /ˈtu myəˌloʊs, ˈtyu-/.

Origin of tumulous

1820–30; < Latin tumulōsus, equivalent to tumul(us) tumulus + -ōsus -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for tumulous
adj.

1727, from Latin tumulosus, from tumulus (see tumulus).

Online Etymology Dictionary, © 2010 Douglas Harper