What does "hairsplitter" mean?

A stickler person who makes extremely, possibly excessively, fine distinctions (who would separate something as fine as a hair into two pieces and distinguish them).

What is a synonym for "hairsplitter"?

Common synonyms include: nitpicker, pettifogger, prevaricator, quibbler.

Hairsplitter

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A stickler person who makes extremely, possibly excessively, fine distinctions (who would separate something as fine as a hair into two pieces and distinguish them).
2
a disputant who makes unreasonably fine distinctions wordnet

Synonyms

All synonyms

nitpicker pettifogger prevaricator quibbler

Etymology

From hair + splitter.

Related phrases

split hairs

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.