1. 
   unmistakably
   [adv] - without possibility of mistake
   Found op http://www.webdictionary.co.uk/definition.php?query=unmistakably
   
   
2. 
   unmistakably
   adverb without possibility of mistake; `this watercolor is unmistakably a synthesis of nature`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=unmistakably
   
   
3. 
   unmistakably
   1) Clearly 2) Decidedly 3) Definitely 4) Explicitly 5) Remarkably 6) Signally 7) Unequivocally 8) Without possibility of mistake
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/unmistakably/1
   
   

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