savant,person of great learning
savor,taste/flavour smth
sawdust,tiny bits of wood
scabbard,sheath for the blade
scent,smell (pleasant)
scribble,write hastily
scurvy,mean/contemptible 
seal,piece of wax/lead, stamped on the document
secular,material (not spiritual)/living outside monasteries
sedulous,persevering
seminal,like a seed/constituting a source/originative
sententious,short and pithy/full of maxims/proverbs 
sequence,succession/connected line of
serrated,having a toothed edge
serration,having a toothed edge
servile,like a slave/lacking independence
servile,slavish/cringing
severance,severing
shaft,arrow or spear/smth long and narrow
shallow,little depth/not earnest
shard,piece of broken earthenware
sheath,cover for the blade of a weapon or a tool
shove,push
shrewd,astute/showing sound judgement
shrill,sparp/piercing
shun,keep away from/avoid
shunt,send from one track to another/lay aside/evade discussion
sidestep,step to one side
sinuous,winding/undulating/serpentine 
skiff,small boat
skit,short piece of humorous writing
slack,sluggish/dull/not tight
slake,to assuage/to satisfy/allay 
slate,king of blue-grey stone/propose/critisize
sluggard,lazy/slow-moving person
soar,rise/fly high
sober,self-controlled
sobriety,quality or condition of being sober
sodden,soaked/saturated 
soggy,heavy with water
solemnity,a seriousness/a gravity
solvent,of the power of forming a solution
somatic,of the body
soot,black powder in smoke
sophisticated,complex/subtle/refined
sophistry,fallacious reasoning/faulty logic 
sophomoric,self-assured though immature/affected/bombastic/overblown
sordid,wretched/comfortless/contemptible
spear,weapon with a metal point on a long shaft
specious,illogical/of questionable truth or merit