sliver, n. [splinter].
slobber, v. [drivel], [drool], slabber, slaver; [smear], [daub], [defile].
slogan, n. war [cry], rallying [cry].
slope, n. [inclination], [slant], obliquity, acclivity; declivity.
sloping, a. oblique, [slanting]; acclivous; declivous.
slosh, n. [slush], sludge.
sloth, n. sluggishness, [indolence], [laziness].
slothful, a. dronish, [lazy], [indolent], [supine], [sluggish], [idle], [inactive].
slouchy, a. slouching, [ungainly], [awkward].