unplayable - definition and synonyms

adjective 

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/ʌnˈpleɪəb(ə)l/
  1. 1
    in sport, an unplayable ball or shot is very difficult to hit or to deal with, usually because an opponent has played it very well
  2. 2
    a piece of ground that is unplayable cannot be used for playing sport on, usually because the weather is bad