| sinopia | (noun) a red ocher formerly used as a pigment | Synonyms: sinoper, sinopis |
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| sinopis | (noun) a red ocher formerly used as a pigment | Synonyms: sinoper, sinopia |
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| sinter | (verb) cause (ores or powdery metals) to become a coherent mass by heating without melting | - |
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| sintered | (adjective) formed into a mass by heat and pressure | - |
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| sinuate | (adjective) curved or curving in and out | Synonyms: sinuous, wiggly |
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| (adjective) having a strongly waved margin alternately concave and convex | - |
| sinuosity | (noun) having bends (especially of streams and roads) | Synonyms: sinuousness |
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| sinuous | (adjective) curved or curving in and out | Synonyms: sinuate, wiggly |
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| (adjective) gracefully thin and bending and moving with ease | Synonyms: lissom, lissome, lithe, lithesome, supple |
| sinuously | (adverb) in a sinuous manner | - |
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| sinuousness | (noun) having bends (especially of streams and roads) | Synonyms: sinuosity |
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| sinus | (noun) a wide channel containing blood; does not have the coating of an ordinary blood vessel | Synonyms: venous sinus |
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| (noun) any of various air-filled cavities especially in the bones of the skull | - |
| (noun) an abnormal passage leading from a suppurating cavity to the body surface | Synonyms: fistula |
| sinusitis | (noun) inflammation of one of the paranasal sinuses | - |
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| sinusoid | (noun) tiny endothelium-lined passages for blood in the tissue of an organ | - |
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| (noun) the curve of y=sin x | Synonyms: sine curve |
| sinusoidal | (adjective) having a succession of waves or curves | - |
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| sinusoidally | (adverb) in a sinusoidal manner | - |
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| sip | (noun) a small drink | - |
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| (verb) drink in sips | - |
| siphon | (noun) a tubular organ in an aquatic animal (especially in mollusks) through which water can be taken in or expelled | Synonyms: syphon |
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| (noun) a tube running from the liquid in a vessel to a lower level outside the vessel so that gravity forces the liquid through the tube | Synonyms: syphon |
| (verb) move a liquid from one container into another by means of a siphon or a siphoning action | - |
| (verb) convey, draw off, or empty by or as if by a siphon | Synonyms: siphon off, syphon |
| siphonophore | (noun) a floating or swimming oceanic colony of polyps often transparent or showily colored | - |
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| sipper | (noun) a drinker who sips | - |
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| sipunculid | (noun) small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut | Synonyms: peanut worm |
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| sir | (noun) term of address for a man | - |
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| sirdar | (noun) an important person in India | - |
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| sire | (noun) male parent of an animal especially a domestic animal such as a horse | - |
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| (noun) the founder of a family | Synonyms: father, forefather |
| (noun) a title of address formerly used for a man of rank and authority | - |
| (verb) make (offspring) by reproduction | Synonyms: beget, bring forth, engender, father, generate, get, mother |
| siren | (noun) eellike aquatic North American salamander with small forelimbs and no hind limbs; have permanent external gills | - |
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| (noun) an acoustic device producing a loud often wailing sound as a signal or warning | - |
| (noun) a warning signal that is a loud wailing sound | - |
| (noun) a woman who is considered to be dangerously seductive | Synonyms: Delilah, enchantress, femme fatale, temptress |
| sirenian | (noun) any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs | Synonyms: sea cow, sirenian mammal |
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| siriasis | (noun) sudden prostration due to exposure to the sun or excessive heat | Synonyms: insolation, sunstroke, thermic fever |
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| siris | (noun) large spreading Old World tree having large leaves and globose clusters of greenish-yellow flowers and long seed pods that clatter in the wind | Synonyms: Albizia lebbeck, Albizzia lebbeck, siris tree |
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| sirloin | (noun) the portion of the loin (especially of beef) just in front of the rump | - |
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| sirocco | (noun) a windstorm that lifts up clouds of dust or sand | Synonyms: dust storm, duster, sandstorm |
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| sirrah | (noun) formerly a contemptuous term of address to an inferior man or boy; often used in anger | - |
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| sirup | (noun) a thick sweet sticky liquid | Synonyms: syrup |
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| sis | (noun) a female person who has the same parents as another person | Synonyms: sister |
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| sisal | (noun) Mexican or West Indian plant with large fleshy leaves yielding a stiff fiber used in e.g. rope | Synonyms: Agave sisalana |
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| (noun) a plant fiber used for making rope | Synonyms: sisal hemp |
| sise | (noun) the cardinal number that is the sum of five and one | Synonyms: 6, Captain Hicks, half a dozen, hexad, sestet, sextet, sextuplet, six, sixer, VI |
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| sisham | (noun) East Indian tree whose leaves are used for fodder; yields a compact dark brown durable timber used in shipbuilding and making railroad ties | Synonyms: Dalbergia sissoo, sissoo, sissu |
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| siskin | (noun) small yellow-and-black Eurasian finch with a sharp beak | Synonyms: Carduelis spinus |
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| siss | (verb) make a sharp hissing sound, as if to show disapproval | Synonyms: hiss, sibilate, sizz |
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| (verb) express or utter with a hiss | Synonyms: hiss, sibilate, sizz |
| sissification | (noun) Sexual act where a male is forced to act effeminately and dress like a woman | - |
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| sissified | (adjective) having unsuitable feminine qualities | Synonyms: cissy, effeminate, emasculate, epicene, sissy, sissyish |
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| sissiness | (noun) the trait of being effeminate (derogatory of a man) | Synonyms: effeminacy, effeminateness, softness, unmanliness, womanishness |
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| sissoo | (noun) East Indian tree whose leaves are used for fodder; yields a compact dark brown durable timber used in shipbuilding and making railroad ties | Synonyms: Dalbergia sissoo, sisham, sissu |
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| sissu | (noun) East Indian tree whose leaves are used for fodder; yields a compact dark brown durable timber used in shipbuilding and making railroad ties | Synonyms: Dalbergia sissoo, sisham, sissoo |
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| sissy | (adjective) having unsuitable feminine qualities | Synonyms: cissy, effeminate, emasculate, epicene, sissified, sissyish |
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| (noun) a timid man or boy considered childish or unassertive | Synonyms: milksop, Milquetoast, pansy, pantywaist |
| sissyish | (adjective) having unsuitable feminine qualities | Synonyms: cissy, effeminate, emasculate, epicene, sissified, sissy |
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| sister | (noun) a female person who has the same parents as another person | Synonyms: sis |
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| (noun) a female person who is a fellow member of a sorority or labor union or other group | - |
| sisterhood | (noun) a religious society of women who live together as sisters (especially an order of nuns) | - |
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| (noun) an association or society of women who are linked together by a common religion or trade or interest | Synonyms: sistership |
| (noun) the kinship relation between a female offspring and the siblings | Synonyms: sistership |
| sisterlike | (adjective) like or characteristic of or befitting a sister | Synonyms: sisterly, sororal |
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| sisterly | (adjective) like or characteristic of or befitting a sister | Synonyms: sisterlike, sororal |
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| sistership | (noun) an association or society of women who are linked together by a common religion or trade or interest | Synonyms: sisterhood |
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| (noun) the kinship relation between a female offspring and the siblings | Synonyms: sisterhood |
| sit | (verb) serve in a specific professional capacity | - |
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| (verb) be in a position in which one's upper body is largely upright and supported by one's backside | Synonyms: sit down |
| (verb) show to a seat; assign a seat for | Synonyms: seat, sit down |
| (verb) take a seat | Synonyms: sit down |
| (verb) be in session | - |
| (verb) sit and travel on the back of animal, usually while controlling its motions | Synonyms: ride |
| (verb) assume a posture as for artistic purposes | Synonyms: model, pose, posture |
| (verb) work or act as a baby-sitter | Synonyms: baby-sit, babysit |
| (verb) be around, often idly or without specific purpose | Synonyms: sit around |
| (verb) be located or situated somewhere | - |
| sitar | (noun) a stringed instrument of India; has a long neck and movable frets; has 6 or 7 metal strings for playing and usually 13 resonating strings | - |
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| sitcom | (noun) a humorous television program based on situations that could arise in everyday life | Synonyms: situation comedy |
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| (noun) a humorous drama based on situations that might arise in day-to-day life | Synonyms: situation comedy |
| site | (noun) a computer connected to the internet that maintains a series of web pages on the World Wide Web; a computer connected to the internet that maintains a series of web pages on the World Wide Web | Synonyms: internet site, web site, website |
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| (noun) the piece of land on which something is located (or is to be located) | Synonyms: land site |
| (noun) physical position in relation to the surroundings | Synonyms: situation |
| (verb) assign a location to | Synonyms: locate, place |
| sitter | (noun) a domestic hen ready to brood | Synonyms: brood hen, broody, broody hen, setting hen |
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| (noun) a person engaged to care for children when the parents are not home | Synonyms: baby-sitter, babysitter |
| (noun) an organism (person or animal) that sits | - |
| (noun) a person who poses for a painter or sculptor | Synonyms: artist's model |
| sitting | (adjective) (of persons) having the torso erect and legs bent with the body supported on the buttocks | Synonyms: seated |
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| (adjective) not moving and therefore easy to attack | - |
| (noun) the act of assuming or maintaining a seated position | - |
| (noun) (photography) the act of assuming a certain position (as for a photograph or portrait) | Synonyms: posing |
| (noun) a session as of a legislature or court | - |
| (noun) a meeting of spiritualists | Synonyms: seance, session |
| situate | (verb) put (something somewhere) firmly | Synonyms: deposit, fix, posit |
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| (verb) determine or indicate the place, site, or limits of, as if by an instrument or by a survey | Synonyms: locate |
| situated | (adjective) situated in a particular spot or position | Synonyms: located, placed, set |
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| situation | (noun) a job in an organization | Synonyms: berth, office, place, position, post |
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| (noun) physical position in relation to the surroundings | Synonyms: site |
| (noun) the general state of things; the combination of circumstances at a given time | Synonyms: state of affairs |
| (noun) a condition or position in which you find yourself | Synonyms: position |
| (noun) a complex or critical or unusual difficulty | - |
| six | (adjective) denoting a quantity consisting of six items or units | Synonyms: 6, half-dozen, half dozen, vi |
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| (noun) a playing card or domino or die whose upward face shows six pips | Synonyms: six-spot |
| (noun) the cardinal number that is the sum of five and one | Synonyms: 6, Captain Hicks, half a dozen, hexad, sestet, sextet, sextuplet, sise, sixer, VI |
| sixer | (noun) the cardinal number that is the sum of five and one | Synonyms: 6, Captain Hicks, half a dozen, hexad, sestet, sextet, sextuplet, sise, six, VI |
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| sixfold | (adjective) having six units or components | Synonyms: sextuple, six-fold |
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| (adverb) by a factor of six | Synonyms: six times |
| sixpack | (noun) a carton containing six bottles or cans | Synonyms: six-pack, six pack |
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| sixpence | (noun) a small coin of the United Kingdom worth six pennies; not minted since 1970 | Synonyms: tanner |
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| sixpenny | (adjective) of trifling worth | Synonyms: threepenny, tuppeny, two-a-penny, twopenny-halfpenny, twopenny |
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| sixsome | (noun) six people considered as a unit | Synonyms: sextet, sextette |
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| sixteen | (adjective) being one more than fifteen | Synonyms: 16, xvi |
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| (noun) the cardinal number that is the sum of fifteen and one | Synonyms: 16, XVI |
| sixteenth | (adjective) coming next after the fifteenth in position | Synonyms: 16th |
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| (noun) one part in sixteen equal parts | Synonyms: one-sixteenth, sixteenth part |
| (noun) position 16 in a countable series of things | - |
| sixth | (adjective) coming next after the fifth and just before the seventh in position | Synonyms: 6th |
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| (noun) the musical interval between one note and another six notes away from it | - |
| (noun) one part in six equal parts | Synonyms: one-sixth |
| (noun) position six in a countable series of things | - |
| sixthly | (adverb) in the sixth place | - |
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| sixties | (noun) the time of life between 60 and 70 | Synonyms: mid-sixties |
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| (noun) the decade from 1960 to 1969 | Synonyms: 1960s |
| sixtieth | (adjective) the ordinal number of sixty in counting order | Synonyms: 60th |
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| (noun) one part in sixty equal parts | Synonyms: one-sixtieth |
| (noun) position 60 in a countable series of things | - |
| sixty | (adjective) being ten more than fifty | Synonyms: 60, lx, threescore |
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| (noun) the cardinal number that is the product of ten and six | Synonyms: 60, LX |
| sizable | (adjective) large in amount or extent or degree | Synonyms: goodish, goodly, healthy, hefty, respectable, sizeable, tidy |
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| (adjective) fairly large in size | Synonyms: ample, sizeable |
| size | (adjective) (used in combination) sized | - |
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| (noun) the physical magnitude of something (how big it is) | - |
| (noun) the property resulting from being one of a series of graduated measurements (as of clothing) | - |
| (noun) a large magnitude | - |
| (noun) the actual state of affairs | Synonyms: size of it |
| (noun) any glutinous material used to fill pores in surfaces or to stiffen fabrics | Synonyms: sizing |
| (verb) make to a size; bring to a suitable size | - |
| (verb) sort according to size | - |
| (verb) cover or stiffen or glaze a porous material with size or sizing (a glutinous substance) | - |
| sizeable | (adjective) large in amount or extent or degree | Synonyms: goodish, goodly, healthy, hefty, respectable, sizable, tidy |
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| (adjective) fairly large in size | Synonyms: ample, sizable |
| sizeableness | (noun) unusual largeness in size or extent or number | Synonyms: enormousness, grandness, greatness, immenseness, immensity, vastness, wideness |
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| sized | (adjective) having a specified size | - |
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| (adjective) having the surface treated or coated with sizing | - |
| sizing | (noun) any glutinous material used to fill pores in surfaces or to stiffen fabrics | Synonyms: size |
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| sizz | (verb) make a sharp hissing sound, as if to show disapproval | Synonyms: hiss, sibilate, siss |
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| (verb) express or utter with a hiss | Synonyms: hiss, sibilate, siss |
| sizzle | (noun) a sizzling noise | - |
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| (verb) burn or sear with a sizzling sound | - |
| (verb) make a sound like frying fat | - |
| (verb) seethe with deep anger or resentment | - |
| sizzling | (adjective) hot enough to burn with or as if with a hissing sound | - |
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| (adjective) characterized by intense emotion or interest or excitement | Synonyms: red-hot |