Webster's Revised Unabridged Dictionary · 1913

Imparity

Imparity , noun

[Prefix im- + parity: compare French imparité.]

1.
Inequality; disparity; disproportion; difference of degree, rank, excellence, number, etc. — Milton
2.
Lack of comparison, correspondence, or suitableness; incongruity.
In this region of merely intellectual notion we are at once encountered by the imparity of the object and the faculty employed upon it. — I. Taylor
3.
Indivisibility into equal parts; oddness. [Rare]