1. 
   ferocious
   [adj] - marked by extreme and violent energy
   Found op http://www.webdictionary.co.uk/definition.php?query=ferocious
   
   
2. 
   Ferocious
   Fe·ro'cious adjective [ Latin ferox , -ocis , fierce: confer French féroce . See Ferocity .] Fierce; savage; wild; indicating cruelty; ravenous; rapacious; as, ferocious look or features; a ferocious lion. &#...
   Found op http://www.encyclo.co.uk/webster/F/20
   
   
3. 
   ferocious
   fierce adjective marked by extreme and violent energy; `a ferocious beating`; `fierce fighting`; `a furious battle`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=ferocious
   
   
4. 
   Ferocious
   • (a.) Fierce; savage; wild; indicating cruelty; ravenous; rapacious; as, ferocious look or features; a ferocious lion.
   Found op http://thinkexist.com/dictionary/meaning/ferocious/
   
   
5. 
   ferocious
   ferocious 1. Marked by extreme and violent energy. 2. Savagely fierce, cruel, or violent. 3. Marked by unrelenting intensity, very great, extreme: 'The ferocious heat has been unbearable.'
   Found op http://www.wordinfo.info/words/index/info/view_unit/3874/
   
   
6. 
   ferocious
   1) Fierce 2) Furious 3) Marked by extreme and violent energy 4) Savage 5) Violent
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/ferocious/1
   
   

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