tempestuous
tem·pes·tuous
adjective
Origin
From Late Middle English tempestious, tempestous, tempestuous (“stormy, turbulent, tempestuous”), from Anglo-Norman tempestous, and Old French tempesteus, tempestos, tempestous, tempestuose (modern French tempétueux), and directly from its etymon Latin tempestuōsus (“stormy, turbulent, tempestuous; impetuous”), from tempestās, tempestūs (“point or period of time; season; weather, specifically bad weather; storm, tempest”) (from tempus (“period of time; (rare) weather”), possibly from Proto-Indo-European *temh₁- (“to cut”) or *ten- (“to extend, stretch”)) + -ōsus (suffix meaning ‘full of; overly; prone to’ forming adjectives from nouns). The English word is equivalent to tempest + -uous (a variant of -ous (suffix forming adjectives from nouns, denoting the presence of a quality, typically in abundance)).
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.