Webster’s Revised Unabridged Dictionary · 1913
Exactness
Ex·act′ness, n. 1. The condition of being exact; accuracy; nicety; precision; regularity; as, exactness of judgement or deportment.
2. Careful observance of method and conformity to truth; as, exactness in accounts or business.
He had . . . that sort of exactness which would have made him a respectable antiquary. Macaulay.