"sliding" in the verb sense
1. skid, slip, slue, slew, slide
move obliquely or sideways, usually in an uncontrolled manner
"the wheels skidded against the sidewalk"
2. slither, slide
to pass or move unobtrusively or smoothly
"They slid through the wicket in the big gate"
move smoothly along a surface
"He slid the money over to the other gambler"
"sliding" in the adjective sense
being a smooth continuous motion
Source: WordNet® (An amazing lexical database of English)
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