1. pettiness, triviality, slightness, puniness, unimportance

usage: the quality of being unimportant and petty or frivolous

2. technicality, trifle, triviality, detail, item, point

usage: a detail that is considered insignificant

3. triviality, trivia, trifle, small beer, object, physical object

usage: something of small importance

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See also: triviality (Dictionary)