freakish

Adjective

freakish (comparative more freakish, superlative most freakish)

1. Resembling a freak.
2. Strange, unusual, abnormal or bizarre.
   • It was a realy freakish accident that claimed many lives.
   • In all this series there is an almost freakish tendency toward the development of characters usually regarded as generic, as a result of which most of the genera have only one known species each.1926, John Merton Aldrich, “Notes on Muscoid Flies with Retracted Hind Crossvein, with Key and Several New Genera and Species”, in Transactions of the American Entomological Society, volume 52...
3. Capricious, unpredictable.
   • What freakish weather we are having lately in these parts.