1) Angry 2) As if showing violent anger 3) Fiery 4) Furious 5) Raging 6) Stormy 7) Turbulent 8) Unsettled 9) Up and down 10) Violent 11) Wild Found on https://www.crosswordclues.com/clue/tempestuous
• (a.) Of or pertaining to a tempest; involving or resembling a tempest; turbulent; violent; stormy; as, tempestuous weather; a tempestuous night; a tempestuous debate. Found on http://thinkexist.com/dictionary/meaning/tempestuous/
Tem·pes'tu·ous adjective [ Latin tempestuous : confer Old French tempestueux , French tempêtueux .] Of or pertaining to a tempest; involving or resembling a tempest; turbulent; violent; stormy; as, tempestuous weather; a tempestuous night; a tempestuous deb... Found on http://www.encyclo.co.uk/webster/T/23