slipping (Adjective) — Moving as on a slippery surface. ex. "his slipping and slithering progress over the ice"
slipping (Verb) — Move obliquely or sideways, usually in an uncontrolled manner. ex. "the wheels slipped against the pavement"
slipping (Verb) — Move stealthily. ex. "The ship slipped away in the darkness"
slipping (Verb) — Insert inconspicuously, quickly or quietly. ex. "He slipped some money into the waiter's hand"
slipping (Verb) — Get worse. ex. "My grades are slipping"
slipping (Verb) — Move smoothly and easily. ex. "the bolt slipped into place" ex. "water slipped from the polished marble"
slipping (Verb) — To make a mistake or be incorrect.
slipping (Verb) — Pass on stealthily. ex. "He slipped me the key when nobody was looking"
slipping (Verb) — (of clothes) quickly put on or take off. ex. "slip into something comfortable"
slipping (Verb) — Cause to move with a smooth or sliding motion. ex. "he slipped the bolt into place"
slipping (Verb) — Pass out of one's memory.
slipping (Verb) — Move out of position.