Definition of Slipping

Adjective: slipping sli-ping

Moving as on a slippery surface
"his slipping and slithering progress over the ice";
- slithering

Verb: slip (slipped,slipping) slip

Move obliquely or sideways, usually in an uncontrolled manner
"the wheels slipped against the pavement";
- skid, slue, slew, slide
Move stealthily
"The ship slipped away in the darkness";
- steal
Insert inconspicuously, quickly or quietly
"He slipped some money into the waiter's hand"
Get worse
"My grades are slipping";
- drop off, drop away, fall away
Move smoothly and easily
"the bolt slipped into place"; "water slipped from the polished marble"
To make a mistake or be incorrect
- err, mistake
Pass on stealthily
"He slipped me the key when nobody was looking";
- sneak
(of clothes) quickly put on or take off
"slip into something comfortable"
Cause to move with a smooth or sliding motion
"he slipped the bolt into place"
Pass out of one's memory
- slip one's mind
Move out of position
- dislocate, luxate, splay