('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']
(..) You know, I... I've saved a lot of weird things, too. Like what? Well, um, did you know I have a microscope slide with a little bit of tissue from the first brain I ever dissected? I have an old teddy bear I secretly wiped my nose on (..)2016 TvShow: The Big Bang Theory Title: The Solder Excursion Diversion Season: 9 Episode 19