1slide 
/ˈslaɪd/ verb
slides; slid /ˈslaɪd/ verb /ˈslɪd/; slid·ing 1 a : to move smoothly along a surface [no obj] ▪ The door slides open easily. ▪ The firefighters slid down the pole to their trucks. [+ obj] ▪ He slid the bottle across the table. ▪ Slide your finger along the seam. ▪ She slid the paper under the door.
b [no obj] : to move over ice or snow smoothly and often in a way that cannot be controlled
▪ He slid across the ice. ▪ Cars were slipping and sliding all over the roads during the snowstorm. 2 [no obj] : to slip and fall
▪ Her purse slid out of her hands. ▪ The strap of her dress kept sliding down/off. 3 always followed by an adverb or preposition a : to move or pass smoothly and easily into or out of something [no obj] ▪ She slid into the booth beside us. ▪ He slid into [=began doing] his impersonation of the president. [+ obj] ▪ He slid the key into his pocket. ▪ He always finds a way to slide in a reference to his new book.
b : to move so you or your movements are not noticed [no obj] ▪ They slid [=slipped] out of the room when nobody was looking. [+ obj] ▪ He quietly slid the money into my hand. 4 [no obj] : to become gradually worse over time
▪ His parents are concerned that their son's grades have started to slide. [=worsen] ▪ Sales figures have been sliding [=declining] for the last three quarters. ▪ The restaurant's new management is really letting the quality of the food slide. 5 [no obj] baseball : to dive toward a base to avoid being tagged out
▪ He slid into second base.
b [no obj] : to move over ice or snow smoothly and often in a way that cannot be controlled
▪ He slid across the ice. ▪ Cars were slipping and sliding all over the roads during the snowstorm.
▪ Her purse slid out of her hands. ▪ The strap of her dress kept sliding down/off.
b : to move so you or your movements are not noticed [no obj] ▪ They slid [=slipped] out of the room when nobody was looking. [+ obj] ▪ He quietly slid the money into my hand.
▪ His parents are concerned that their son's grades have started to slide. [=worsen] ▪ Sales figures have been sliding [=declining] for the last three quarters. ▪ The restaurant's new management is really letting the quality of the food slide.
▪ He slid into second base.
let (something) slide
informal : to do nothing about (something, such as another person's mistake or bad behavior) : to ignore (something)
▪ You were late this morning. I'll let it slide this time, but don't let it happen again. ▪ It may be best to let things slide this time.
▪ You were late this morning. I'll let it slide this time, but don't let it happen again. ▪ It may be best to let things slide this time.
