Nouns

(n)faux pas, gaffe, solecism, slip, gaucheriea socially awkward or tactless act
(n)slip, slip-up, miscue, parapraxisa minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
(n)slippotter's clay that is thinned and used for coating or decorating ceramics
(n)cutting, slipa part (sometimes a root or leaf or bud) removed from a plant to propagate a new plant through rooting or grafting
(n)slipa young and slender person“he's a mere slip of a lad”
(n)mooring, moorage, berth, slipa place where a craft can be made fast
(n)slip, tripan accidental misstep threatening (or causing) a fall“he blamed his slip on the ice”, “the jolt caused many slips and a few spills”
(n)slickness, slick, slipperiness, slipa slippery smoothness“he could feel the slickness of the tiller”
(n)strip, slipartifact consisting of a narrow flat piece of material
(n)slip, slip of papera small sheet of paper“a receipt slip”, “a withdrawal slip”
(n)chemise, shimmy, shift, slip, teddya woman's sleeveless undergarment
(n)case, pillowcase, slip, pillow slipbed linen consisting of a cover for a pillow“the burglar carried his loot in a pillowcase”
(n)skid, slip, sideslipan unexpected slide
(n)slip, sideslipa flight maneuver; aircraft slides sideways in the air
(n)slip, elusion, eludingthe act of avoiding capture (especially by cunning)

Verbs

(v)steal, slipmove stealthily“The ship slipped away in the darkness”
(v)slipinsert inconspicuously or quickly or quietly“He slipped some money into the waiter's hand”
(v)skid, slip, slue, slew, slidemove obliquely or sideways, usually in an uncontrolled manner“the wheels skidded against the sidewalk”
(v)slip, drop off, drop away, fall awayfall to a lower standard“My grades are slipping”
(v)slipmove smoothly and easily“the bolt slipped into place”, “water slipped from the polished marble”
(v)err, mistake, slipto make a mistake or be incorrect
(v)slip, sneakpass on stealthily“He slipped me the key when nobody was looking”
(v)slipmove easily“slip into something comfortable”
(v)slipcause to move with a smooth or sliding motion“he slipped the bolt into place”
(v)slip, slip one's mindpass out of one's memory
(v)dislocate, luxate, splay, slipmove out of position“dislocate joints”, “the artificial hip joint luxated and had to be put back surgically”