Hair-Splitting Meaning
(idiomatic) the act of finding exceedingly small differences which are probably neither important nor noticeable to most people.
Example: 2006, Ian Aitken, in The Guardian, Richard Clements Obituary
Dick's Tribune poked endless fun at the hair-splitting sectarianism of the various Trotskyist groups jostling on the fringes of the Labour party at that time.
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