leftward

adj

1. To or from the left.

   “This is seen as abnormal rapid leftward motion of the septum during preejection followed by rightward (paradoxical) motion.”

   “Yes, the Democratic Party's sharp leftward pivot might have nuked the Never Trump movement all on its own, because it is leaving no sane alternatives to [Donald] Trump.”

adv

1. To or from the left.

   “Rightward and leftward rise the rocks”