The Collaborative International Dictionary of English v.0.48:

Unlooked \Un*looked"\, a. [Pref. un- not + looked.]
   Not observed or foreseen; unexpected; -- generally with for.
   "Unlooked success." --Denham.
   [1913 Webster]

         She comes unlooked for, if she comes at all. --Pope.
   [1913 Webster]