('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']
(..) where they are and starve us out... or go for position, shoot us. Might even get a rock slide started. What else can they do? They could surrender to us, but I wouldn't count on that. They're going for (..)1969 Butch Cassidy and the Sundance Kid