Lewis Short
inclēmentĭa (noun F) : inclemens
* Unmercifulness, rigor, harshness, roughness, severity (poet. and in post-class. prose): divum inclementia, divum, Has evertit opes,Verg. A. 2, 602: durae mortis,id. G. 3, 68: gravis fati,Stat. S. 1, 4, 50: maris,Claud. B. G. 210: caeli,Just. 9, 2: dirae formae (Plutonis),Claud. Rapt. Pros. 1, 82.
Charlton T. Lewis, Charles Short, A Latin Dictionary