('chiefly Brit') Her career has been 'on the slide' [='on the decline'] for a couple of years.
You were late this morning. I'll 'let it slide' this time, but don't let it happen again.
His parents are concerned that their son's grades have started to 'slide'. [='worsen']
(..) there's little toy LEGO bricks flying all around the room. One of them hit me right in the face so hard it drew blood. CONSTABLE HEEPS: I saw the chair slide by itself, across the floor, a distance of several feet. I checked the chair for wires, but could find nothing to explain it. (..)2016 The Conjuring 2