1. 
   indefatigable
   [adj] - showing sustained enthusiastic action with unflagging vitality
   Found op http://www.webdictionary.co.uk/definition.php?query=indefatigable
   
   
2. 
   Indefatigable
   In`de·fat'i·ga·ble (ĭn`de*făt'ĭ*gȧ*b'l) adjective [ Latin indefatigabilis : confer Old French indefatigable . See In- not, and Defatigable , and confer Infatigable .] Incapable of being fat...
   Found op http://www.encyclo.co.uk/webster/I/41
   
   
3. 
   indefatigable
   tireless adjective showing sustained enthusiastic action with unflagging vitality; `an indefatigable advocate of equal rights`; `a tireless worker`; `unflagging pursuit of excellence`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=indefatigable
   
   
4. 
   Indefatigable
   • (a.) Incapable of being fatigued; not readily exhausted; unremitting in labor or effort; untiring; unwearying; not yielding to fatigue; as, indefatigable exertions, perseverance, application.
   Found op http://thinkexist.com/dictionary/meaning/indefatigable/
   
   
5. 
   Indefatigable
   The name Indefatigable has been used for British naval vessels since 1784. HMS Indefatigable was a British second-class cruiser of 3600 tons launched in 1891.
   Found op http://www.probertencyclopaedia.com/browse/RI.HTM
   
   
6. 
   Indefatigable
   One of three British battle cruisers sunk by the German naval fleet at the Battle of Jutland (31 May-1 June 1916).
   Found op http://www.nationalarchives.gov.uk/pathways/firstworldwar/glossary/glossary
   
   
7. 
   indefatigable
   1) Energetic 2) Tireless 3) Tireless in pursuit of weight control? 4) Unflagging 5) Unwearying
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/indefatigable/1
   
   

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