1. 
   unimpeachable
   [adj] - beyond doubt or reproach
   Found op http://www.webdictionary.co.uk/definition.php?query=unimpeachable
   
   
2. 
   unimpeachable
   adjective beyond doubt or reproach; `an unimpeachable source`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=unimpeachable
   
   
3. 
   Unimpeachable
   • (a.) Not impeachable; not to be called in question; exempt from liability to accusation; free from stain, guilt, or fault; irreproachable; blameless; as, an unimpeachable reputation; unimpeachable testimony.
   Found op http://thinkexist.com/dictionary/meaning/unimpeachable/
   
   
4. 
   unimpeachable
   unimpeachable 1. Impossible to discredit or to challenge. 2. So good as to be beyond reproach. 3. Completely acceptable; not open to exception or to reproach. 4. Free of guilt; not subject to blame.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2801/8
   
   
5. 
   unimpeachable
   1) Beyond doubt or reproach 2) Unquestionable
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/unimpeachable/1
   
   

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