insolubility

1. The property (of a problem or difficulty) that makes it impossible to solve (synset 105222967)
   is a type of: property - a basic or essential attribute shared by all members of a class
   same as: unsolvability
2. The quality of being insoluble and difficult to dissolve in liquid (synset 105217641)
   is a type of: quality - an essential and distinguishing attribute of something or someone

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