[syn: angry, furious, raging, tempestuous, wild]
The Collaborative International Dictionary of English v.0.48:
Tempestuous \Tem*pes"tu*ous\, a. [L. tempestuous: cf. OF.
   tempestueux, F. temp[^e]tueux.]
   Of or pertaining to a tempest; involving or resembling a
   tempest; turbulent; violent; stormy; as, tempestuous weather;
   a tempestuous night; a tempestuous debate. --
   Tem*pes"tu*ous*ly, adv. -- Tem*pes"tu*ous*ness, n.
   [1913 Webster]
         They saw the Hebrew leader,
         Waiting, and clutching his tempestuous beard.
                                                  --Longfellow.
   [1913 Webster]
WordNet (r) 3.0 (2006):
tempestuous
    adj 1: characterized by violent emotions or behavior; "a stormy
           argument"; "a stormy marriage" [syn: stormy,
           tempestuous]
    2: (of the elements) as if showing violent anger; "angry clouds
       on the horizon"; "furious winds"; "the raging sea" [syn:
       angry, furious, raging, tempestuous, wild]
Moby Thesaurus II by Grady Ward, 1.0:
58 Moby Thesaurus words for "tempestuous":
   anarchic, angry, blustering, blusterous, blustery, boisterous,
   chaotic, clamorous, cloudy, coarse, cyclonic, dirty, disruptive,
   fierce, fiery, foul, frantic, frenetic, frenzied, furious, hellish,
   hotheaded, impassioned, impetuous, infuriate, insensate, mad,
   mindless, orgasmic, orgastic, pandemoniac, passionate, raging,
   rainy, ravening, raving, riotous, rip-roaring, rough, simmering,
   storming, stormy, tornadic, troublous, tumultuous, turbulent,
   typhonic, typhoonish, unbridled, uncontrollable, uncontrolled,
   unrestrained, uproarious, vehement, violent, volcanic, wild,
   wrathful