tumultuous

1 marked by sudden or violent disturbance one of the most tumultuous periods in the history of the region Synonyms cataclysmal (or cataclysmic), stormy, tempestuous, convulsive, turbulentRelated Words fitful, spasmodic, sporadic; boisterous, clamorous, furious, noisy, riotousNear Antonyms calm, peaceful, placid, serene, tranquil, undisturbed, unperturbed, unshaken, untroubled

2 marked by turmoil or disturbance especially of natural elements watched the tumultuous weather from the dry safety of our house Synonyms rough, rugged, stormy, tempestuous, wild, turbulentRelated Words blustering, blustery, raging, violent; brutal, harsh, severe; roily, unquiet, unsettled; bleak, inclement, nasty, raw, squallyNear Antonyms calm, halcyon, peaceful, placid, quiet, serene, tranquil; bright, clear, clement, cloudless, fair, sunny, sunshiny, unclouded

3 marked by bursts of destructive force or intense activity after a tumultuous day of trading, the stock market was down 500 points Synonyms bang-bang, blood-and-guts, convulsive, cyclonic, explosive, ferocious, fierce, furious, hammer-and-tongs, hot, knock-down, drag-out (or knock-down-and-drag-out), paroxysmal, rabid, rough, stormy, tempestuous, violent, turbulent, volcanicRelated Words barbarous, brutal, savage, vicious; antagonistic, hostile; aggressive, assertive, bellicose, belligerent, combative, contentious, gladiatorial, pugnacious, quarrelsome, truculent; combustible, volatile; agitated, frantic, frenzied, mad; cataclysmal (or cataclysmic), destructive, ruinousNear Antonyms calm, halcyon, pacific, serene, tranquil; nonbelligerent, unaggressiveAntonyms nonviolent, peaceable, peaceful