English

Alternative forms

• to an hair

Adverb

to a hair ‎(not comparable)

1. to a nicety; to a high degree of precision; with the utmost exactness.

References

• J[ohn] A. Simpson and E[dward] S. C. Weiner, editors (1989) The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ISBN 978-0-19-861186-8.