1. 
   Irrefutable
   Ir`re·fut'a·ble adjective [ Latin irrefutabilis : confer French irréfutable . See Refute .] Incapable of being refuted or disproved; indisputable. -- Ir`re*fut'a*ble*ness , noun -- Ir`re*fut'...
   Found op http://www.encyclo.co.uk/webster/I/97
   
   
2. 
   Irrefutable
   • (a.) Incapable of being refuted or disproved; indisputable.
   Found op http://thinkexist.com/dictionary/meaning/irrefutable/
   
   
3. 
   irrefutable
   The opposite of refutable.
   Found op http://foldoc.org/irrefutable
   
   
4. 
   irrefutable
   1) Incontestable 2) Incontrovertible 3) Indisputable 4) Indubitable 5) Patent 6) Positive 7) The opposite of refutable 8) Undeniable 9) Unquestionable
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/irrefutable/1
   
   

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