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non-essential   (non-essentials plural )
in AM, also use  nonessential  
1  adj Non-essential means not absolutely necessary., (Antonym: essential)  The crisis has led to the closure of a number of non-essential government services.  
2  n-plural Non-essentials are things that are not absolutely necessary., (Antonym: necessities)  In a recession, consumers could be expected to cut down on non-essentials like toys.