Source : Webster's Revised Unabridged Dictionary (1913)

Freak \Freak\ (fr[=e]k), v. t. [imp. & p. p. {Freaked}
   (fr[=e]kt); p. pr. & vb. n. {Freaking}.] [Akin to OE. frakin,
   freken, freckle, Icel. freknur, pl., Sw. fr["a]kne, Dan.
   fregne, Gr. perkno`s dark-colored, Skr. p[.r][,c]ni
   variegated. Cf. {Freckle}, {Freck}.]
   To variegate; to checker; to streak. [R.]

         Freaked with many a mingled hue.         --Thomson.