"slipped" in the verb sense
1. steal, slip
move stealthily
"The ship slipped away in the darkness"
2. slip
insert inconspicuously or quickly or quietly
"He slipped some money into the waiter's hand"
3. skid, slip, slue, slew, slide
move obliquely or sideways, usually in an uncontrolled manner
"the wheels skidded against the sidewalk"
4. slip, drop off, drop away, fall away
get worse
"My grades are slipping"
5. slip
move smoothly and easily
"the bolt slipped into place"
"water slipped from the polished marble"
6. err, mistake, slip
to make a mistake or be incorrect
7. slip, sneak
pass on stealthily
"He slipped me the key when nobody was looking"
8. slip
move easily
"slip into something comfortable"
9. slip
cause to move with a smooth or sliding motion
"he slipped the bolt into place"
10. slip, slip one's mind
pass out of one's memory
11. dislocate, luxate, splay, slip
move out of position
"dislocate joints"
"the artificial hip joint luxated and had to be put back surgically"
Source: WordNet® (An amazing lexical database of English)
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