Definition of slide verb from the Oxford Advanced American Dictionary

      

    slide

     verb
    verb
    NAmE//slaɪd//
     
    Verb Forms present simple I / you / we / they slide
     
    he / she / it slides
     
    past simple slid
     
    -ing form sliding
     
     
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    move smoothly/quietly
  1. 1[intransitive, transitive] to move easily over a smooth or wet surface; to make something move in this way (+ adv./prep.) We slid down the grassy slope. The drawers slide in and out easily. slide something + adv./prep. She slid her hand along the rail. You can slide the front seats forward if necessary. slide (something) + adj. The automatic doors slid open.
  2. 2[intransitive, transitive] to move quickly and quietly, for example in order not to be noticed; to make something move in this way synonym slip + adv./prep. He slid into bed. She slid out while no one was looking. slide something + adv./prep. The man slid the money quickly into his pocket. He slid a shy look at Claire.
  3. become lower/worse
  4. 3[intransitive] slide (from…) (to…) to become gradually lower or of less value Shares slid to a 10-year low.
  5. 4[intransitive] slide (down/into/toward something) to move gradually into a worse situation The industry has slid into decline. They were sliding toward bankruptcy. He got depressed and began to let things slide (= failed to give things the attention they needed).
See the Oxford Advanced Learner's Dictionary entry: slide