unslidingadj.
Etymology: Previous versions of the OED give the stress as: unˈsliding.
the world > movement > progressive motion > specific manner of progressive motion > [adjective] > slipping or sliding > not
1806 O. G. Gregory I. i. iv. 101 Let E be the unsliding body, which acts in the direction EK.
This entry has not yet been fully updated (first published 1926; most recently modified version published online June 2019).