| subrident | adj. | with or accompanied by a smile | ||
| subvention | n. | grant of money for aid, support, or relief; honorarium paid to supposedly amateur athlete | ||
| succinct | adj. | terse | ||
| succory | n. | chicory | ||
| sucker | n. | inhabitant of Illinois | obsolete | |
| sucket | n. | sweet made from candied fruit | ||
| sucket fork | n. | eating utensil with spoon bowl on one end of the stem and two- or three-tined fork on the other, used for eating sweetmeats | ||
| sudarium | n. | cloth for wiping the face, handkerchief; (specifically) the cloth used by Saint Veronica to wipe the face of Jesus | ||
| sudorific | adj. | related to or causing sweat; drug which causes perspiration | ||
| sudoriparous | adj. | secreting sweat | ||
| suffragan | n. | subordinate bishop, or bishop of diocese other than the metropolitan diocese | ||
| suffrage | n. | vote in favor of a proposition or candidate | ||
| sulky | n. | light two-wheel cart with having only a seat for the driver | ||
| sultry | adj. | oppressively hot and humid, sweltering; arousing sexual desire | ||
| sumpter | n. | pack animal | ||
| sunder | v. | to split or cleave | ||
| super | n. | supernumerary | informal | |
| supercargo | n. | merchant ship’s officer in charge of the cargo and its sale | ||
| supercilious | adj. | contemptuously superior or disdainful | ||
| supercilium | n. | 1 | colored stripe on bird’s head running from beak to just above the eye | |
| supercilium | n. | 2 | eyebrow | obsolete |
| supererogate | v. | to do more than required; to make up for lack in one by excess merit in another | ||
| superficies | n. | outer surface | ||
| superincumbent | adj. | lying or resting upon; overhanging; from above (as of pressure) | ||
| superinfection | n. | infection occurring during or after an earlier infection, especially after the use of antibiotics | ||
| superlunary | adj. | celestial or heavenly as opposed to worldly | ||
| supermalagorgeous | adj. | terrific | slang | |
| supernal | adj. | of heaven; belonging to higher plane of existence | ||
| superpurgation | n. | excessive purgation, vomiting, or evacuation of the bowels | ||
| supervalent | adj. | of or related to the exaggerated importance given thoughts by a thinker which that thinker cannot stop thinking | ||
| supralapsarian | adj. | of the Calvinist doctrine that God’s predestination of some to eternal life and His condemnation of others to eternal damnation preceded (in some way) God’s decree of the Creation and the Fall of Man | ||
| supramundane | adj. | supermundane, elevated above or transcending the material world | British | |
| supremum | n. | least upper bound, smallest element of partially ordered set greater than or equal to every element of a subset of the partially ordered set | ||
| surcease | n. | cessation or stop, esp. when temporary | ||
| surcingle | n. | girth for horse or other animal that passes around belly and over pack, blanket, etc. to keep it in place | ||
| surd | n. | irrational number (esp. a root); voiceless consonant; [obsolete] deaf; stupid | ||
| surplice | n. | loose white linen overgarment worn by clergy and choristers | ||
| surrebuttal | n. | plaintiff’s response to a defendant’s rebuttal | ||
| susurration | n. | whisper; rustling | ||
| sutler | n. | merchant selling wares to soldiers in the field | ||
| suzerain | n. | state or ruler having control over dependent state | ||
| swad | n. | thick bunch or mass | ||
| swadkin | n. | diminutive of “swad” meaning country bumpkin, lout | ||
| swainmote | n. | one of the courts of the royal forest, with power over rights of agistment and pannage as well as ability to try offenders by a jury of forest swains | British | |
| swale | n. | low hollow, esp. marshy declivity between higher land | ||
| swank | v. | to swagger, to make pretense of superiority | ||
| sward | n. | surface of earth, usu. covered with herbage; grassy turf | ||
| swarf | n. | 1 | filings or fine grit from operation of grinder, axle, or other abrasive machining | |
| swarf | n. | 2 | fainting spell, swoon | Scots |
| swart | adj. | swarthy; dark in color |