unmist
/(ˌ)ʌnˈmɪst/Now rare
verb
[with object] To make (a person or thing) clear; to uncloud; to clear mist from, to demist. Also without object: to become unclouded or free from mist.
Origin
Early 17th century; earliest use found in John Florio (1553–1625), author and teacher of languages. From un- + mist.