10-40kraadistel nõlvadel suhteliselt kiiresti toimuva setete või kivimiplokkide libisemise tagajärjel tekkiv pinnavorm, landform of mass wasting (slip), occurs on the slopes (10-40o) when descending mass (sliding body) remains relatively coherent and moving along one or more well defined slip surfaces; scarp remains above and toe appears in front of the sliding body. Landform scaling depends on slope parameters. Term is also used to describe the slip process.