I. ˈsli-pər adjective
Etymology: Middle English, from Old English slipor; akin to Middle Low German slipper slippery, slippen to slip
Date: before 12th century
chiefly dialect : slippery
II. noun
Etymology: Middle English, from slippen to slip
Date: 15th century
: a light low-cut shoe that is easily slipped on the foot
• slip·pered -pərd adjective