Lewis Short
dispărĭlĭtas (noun F) : disparilis
* Dissimilarity, difference (ante- and post-class. and very rare): vocis,Varr. L. L. 10, § 36 Müll.: rerum, Gell. praef. § 3: collationis,id. 7, 3, 47.
Charlton T. Lewis, Charles Short, A Latin Dictionary