Source : Webster's Revised Unabridged Dictionary (1913)

Freakish \Freak"ish\, a.
   Apt to change the mind suddenly; whimsical; capricious.

         It may be a question whether the wife or the woman was
         the more freakish of the two.            --L'Estrange.

         Freakish when well, and fretful when she's sick.
                                                  --Pope.
   -- {Freak"ish*ly}, adv. -- {Freak"ish*ness}, n.

Source : WordNet®

freakish
     adj 1: changeable; "a capricious summer breeze"; "freakish weather"
            [syn: {capricious}]
     2: characteristic of a freak; "a freakish extra toe"
     3: conspicuously or grossly unconventional or unusual;
        "restaurants of bizarre design--one like a hat, another
        like a rabbit"; "famed for his eccentric spelling"; "a
        freakish combination of styles"; "his off-the-wall
        antics"; "the outlandish clothes of teenagers"; "outre and
        affected stage antics" [syn: {bizarre}, {eccentric}, {freaky},
         {flaky}, {off-the-wall}, {outlandish}, {outre}]