widdershin(s), adj.
“Moving in an anticlockwise direction, contrary to the apparent course of the sun (considered as unlucky or sinister)”
“And the waves beat upon the one hand, and upon the other the dead leaves ran; and the clouds raced in the sky, and the gulls flew widdershins.” — Robert Louis Stevenson, The Song of the Morrow, 1896
“withershin(s) | widdershin(s), adj.” OED Online. Oxford University Press, March 2014. Web. 2 April 2014.