to glide;  to slide (e.g. on skis);  to fail (an examination);  to bomb (when telling a joke);  to drop;  to go down
 smooth (of a surface);  glassy;  smooth (of an action, proceedings, etc.);  fluent (speech);  continuously differentiable
 to slide into;  to slip into
 to lose one's footing;  to slip
 to make a slip of the tongue;  to say something inadvertently;  to blurt out without thinking
 (playground) slide;  (ship) launching platform;  sliding bed
 to have one's hands slip (and drop something)
 to slide down;  to slip down
 to make a slip of the tongue;  to let something slip
 sideslip;  skid;  shifting to another post (at the same level);  sideways move (at a company);  sliding sideways down a slope (skiing)
 non-slip device (material, tread, etc.);  non-skid;  anti-slip;  back-up option (esp. with regard to university admissions);  back-up choice;  insurance choice
 to let slip;  to slide;  to glide
 to begin slipping or sliding;  to make a start upon
 superficial;  shallow;  frivolous;  careless;  sliding along the surface of something;  being slippery
 to make a slip of the tongue;  to say something inadvertently;  to blurt out without thinking
 to drop into;  to slip into;  to let fall into;  to slide (something) down
 sliding;  being just in time
 to lose one's footing;  to slip
 to let slip;  to slide;  to glide
 sliding safely;  just making it;  being just on time
 smooth (skin, etc.);  sleek;  velvety;  silky
 first ski of the season;  first ski run
 fireman's pole;  sliding pole;  slide guide;  slide bar
 crape myrtle (Lagerstroemia indica)
 floral egg crab (Atergatis floridus);  shawl crab;  brown egg crab