WordNet sense 1 (a part (sometimes a root or leaf or bud) removed from a plant to propagate a new plant through rooting or grafting):

cutting

WordNet sense 2 (a place where a craft can be made fast):

berth, mooring, moorage

WordNet sense 3 (an accidental misstep threatening (or causing) a fall):

trip

WordNet sense 4 (a slippery smoothness):

slick, slickness, slipperiness

WordNet sense 5 (artifact consisting of a narrow flat piece of material):

strip

WordNet sense 6 (a small sheet of paper):

slip of paper

WordNet sense 7 (a woman's sleeveless undergarment):

chemise, shift, shimmy, teddy

WordNet sense 8 (bed linen consisting of a cover for a pillow):

case, pillowcase, case

WordNet sense 9 (pass on stealthily):

sneak

WordNet sense 10 (move stealthily):

steal

WordNet sense 11 (move obliquely or sideways, usually in an uncontrolled manner):

skid, slew, slide, slue

WordNet sense 12 (to make a mistake or be incorrect):

err, mistake

WordNet sense 13 (pass out of one's memory):

slip one's mind

WordNet sense 14 (move out of position):

dislocate, luxate, splay

WordNet sense 15 (an unexpected slide):

sideslip

WordNet sense 16 (get worse):

drop off, fall away, drop away

WordNet sense 17 (a socially awkward or tactless act):

faux pas, gaffe, gaucherie, solecism

WordNet sense 18 (the act of avoiding capture (especially by cunning)):

elusion, eluding

WordNet sense 19 (a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.):

miscue, slip-up, parapraxis