1. 
   mind-boggling
   [Adjective] Very complicated.
   Example: The process for getting a visa seems mind-boggling to me!
   Found op http://www.bbc.co.uk/skillswise/glossary/
   
   
2. 
   mind-boggling
   [adj] - intellectually or emotionally overwhelming
   Found op http://www.webdictionary.co.uk/definition.php?query=mind-boggling
   
   
3. 
   mind-boggling
   adjective intellectually or emotionally overwhelming; `a mind-boggling display`; `a mind-boggling puzzle`
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=mind-boggling
   
   
4. 
   mindboggling
   1) Overwhelming
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/mindboggling/1
   
   

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