1. 
   unsubstantial
   Lacking in matter or substance; visionary; chimerical. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?unsubstantial
   
   
2. 
   Unsubstantial
   • (a.) Lacking in matter or substance; visionary; chimerical.
   Found op http://thinkexist.com/dictionary/meaning/unsubstantial/
   
   
3. 
   unsubstantial
   1) Aerial 2) Aeriform 3) Aery 4) Airy 5) Ethereal 6) Immaterial 7) Insubstantial 8) Nonmaterial 9) Paper 10) Shadowy 11) Unreal 12) Wraithlike
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/unsubstantial/1
   
   

Tip: double click on a word to show its meaning.