Aplit

Rigmarole

Nonsense

Risible

Capable of exiting laughter

Rookery

A place where crows congregate to breed

Rote

Repetition of words/sounds as a means of learning them, with slight attention

Rotund

Round from fullness/plumpness

Rue

Regret extremely

Ruth

Sorrow for another’s misery

Sagacious 

Able to discern + distinguish with wise perception 

Salacious 

Having strong sexual desires 

Salient 

Standing out prominently 

Salutary 

Beneficial 

Salvage

Any act of saving property 

Sanction

Approve authoritatively 

Sanguine 

Color of blood

Sapid

Affecting the sense of taste

Sapient

Possessing wisdom

Sardonic

Scornfully/bitterly sarcastic 

Scintillate

To emit/send forth sparks/little flashes of light

Scruple

Doubt/uncertainty regarding a question of moral right or duty

Scrupulous

Cautious in action for fear of doing wrong

Scurrilous

Grossly indecent/vulgar 

Scuttle 

To sink (a ship) by making holes in the bottom

Sear

Burn on the surface

Sebaceous

Pertaining to/appearing fat

Sedentary

Involving/requiring much sitting

Seditious

Promotion of conduct directed against public order and the tranquility of the state 

Seethe

Violently excited/agitated 

Sentience 

Capacity for sensation/sense-perception

Sepulcher

Burial-place

Sequacious

Ready to be led

Sequester

Cause to withdraw/retire from society/public life

Servitude

Slavery 

Sibilance

Hissing sound

Sinecure 

Any position having emoluments with few/no duties 

Sinuous

Curving in and out

Skiff

Small light boat propelled by oars

Slothful

Lazy 

Solicitude 

Uneasiness of mind ocassioned by desire/anxiety/fear

Somniferous

Tending to produce sleep

Sophism

False argument understood by the reasons himself and intentionally used to deceive

Sordid

Degraded character/nature

Spectrum

Image formed by rays of light/other radiant energy

Spheroid

Body having nearly the form of a sphere

Subvert

To bring to ruin

Spurious 

Not genuine 

Squalid

Dirty/mean/poverty-stricken appearance

Staid

Steady and sober character

Statute

Any authoritatively declared rule/ordinance/decree/law

Stealth

Concealed manner of acting

Stifle

Smother 

Stolid 

Expressing now power of feeling/percieving

Stripling

Mere youth

Stultify

Give an appearance of foolishness to

Stringent

Rigid

Stupendous

Of prodigious side/bulk/degree

Subjacent 

Situated directed underneath

Sublingual 

Beneath the tongue

Subsequent

Following in time

Supine

Lying on the back

Supplant

Take place of