Source : Webster's Revised Unabridged Dictionary (1913)

Evanish \E*van"ish\, v. i. [Pref. e- + vanish: cf. L.
   evanescere. See {Evanesce}, {vanish}.]
   To vanish.

         Or like the rainbow's lovely form, Evanishing amid the
         storm.                                   --Burns.