| sacer | consecrate, consecration, desecrate, desecration, execrable, execrate, execration, reconsecrate, sacerdotal, sacrament, sacramental, sacred, sacrifice, sacrificial, sacrilege, sacrilegious, self-sacrifice, sexton |
| saeculum | secular, siecle |
| saepes | transept |
| sagio | presage, sagacious, sagacity |
| sal | applesauce, salad, salaried, salary, saline, saltpeter(tre), sauce, saucepan, saucer, saucily, saucy, sausage |
| salio | assail, assailant, assault, desultory, exult, exultant, exultation, exultingly, insult, result, resultant, salient, saliy, saute, somersault |
| saliva | salivary |
| salix | salicylic |
| salmo | salmon |
| salus | salubrious, salutary, salutation, salute |
| salvus | safe, safe-conduct, safeguard, safely, safety, sage ( a plant), sagebrush, salvage, salvation, salver, save, saver, saving (s), savior (our), unsafe, vouchsafe |
| sancio | saint, saintly, sanctification, sanctify, sanctimonious, sanction, sanctity, sanctuary, sentry |
| sanguis | consanguinity, ensanguine, sanguinary, sanguine |
| sanus | insane, insanity, sane, sanitarium, sanitary, sanitation, sanity, unsanitary |
| sapio | insipid, sage (wise man), sagely, sapience, sapient, savant, savor (our), unsavory |
| satelles | satellite |
| satis | asset (s), dissatisfaction, dissatisfied (adj.), dissatisfy, insatiable, insatiate, satiate, satiety, satisfaction, satisfactorily, satisfactory, satisfy, unsatisfactory, unsatisfied |
| satur | satirical, satire, satirist, satirize, saturate, saturation |
| Saturnus | saturnine |
| scala | s. scando |
| scamnum | shambles |
| scando | ascend, ascendancy (ency), ascension, ascent, condescend, condescendion, descend, descendant, descent, reascend, scale, scan, transcend, transcendent, transcendental |
| scandula | shingle |
| sindo | rescind |
| scintilla | scintillation, tinsel |
| scio | conscience, conscientious, conscientiously, conscious, consciously consciousness, nice, nicely, nicety, omniscience, omniscient, plebiscite, prescience, prescient, science, scientific, scientifically, scientist, self-consclous, self-consciousness, subconscious, unconscious unconsciously, unconsciousness |
| scribo | ascribe, ascription, circumscribe, conscript, conscription, describe, description, descriptive, indescribable, inscribe, inscription, manuscript, nondescript, postscript, prescribe, prescription, prescriptive, proscribe, proscription, rescript, scribble, scribbler, scribe, scrip, script, scriptural, scripture, scrivener, shrive, subscribe, subscriber, subscription, superscription, transcribe, transcript, transcription |
| scrinium | enshrine, shrine |
| scrupus | scruple, scrupulous, scrupulously, unscrupulous |
| scrutor | inscrutable, scrutinize, scrutiny |
| sculpo | sculptor, sculpture |
| scurra | scurrilous |
| scutra | scullery |
| scutum | escutcheon, esquire, scutcheon, squire |
| sebum | sebaceous, suet |
| seco | bisect, cross-section, dissect, dissection, insect, intersect, intersection, section, sectional, sectionalism, segment, sickle, subsection |
| secundus | s. sequor |
| securus | s. cura |
| sedeo | assess, assessment, assessor, assiduity, assiduous, assiduously, assizes, besiege, besieger, dispossess, ex-president, good-sized, insidious, medium-sized, obsess, obsession, possess, possession, possessive, possessor, prepossess, prepossession, preside, presidency, president, presidential, repossess, reside, residence, resident, presidential, repossess, reside, residence, resident, residential, residual, residue, sedate, sedately, sedative, sedentary, sediment, sedimentary, self-possession, session, siege, sizable, size, subside, subsidy, supersede, surcease, vice-president |
| semen | s. sero (sow) |
| senex | grandsire, messieurs, monsieur, seigneur, senate, snatorial, senile, seniority, senor, senora, senorita, signor, signora, signorina, sir, sire, sirrah, surly |
| sentio | assent, consent, dessension, dissent, dissenter, insensate, insensibility, insensible, nonsense, presentiment, resent, resentful, resentfully, resentment, scent, scentless, sensation, sesational, sense, senseless, sensibility, sensible, sensibly, sensitive, sensitiveness, sensory, sensual, sensuality, sensuous, sentence, sententious, sentient, sentiment, sentimental, sentimentalist, sentimentality |
| sepelio | sepulcher(re), sepulchral, sepulture |
| sequester | sequestration |
| sequor | consecutive, consequence, consequent, consequential, consequently, ensue, execute, execution, executioner, executive, executor, intrinsic, intrinsically, lawsuit, obsequies, obsequious, obsequy, persecute, persecution, persecutor, prosecute, prosecution, prosecutor, pursuance, pursue, pursuer, pursuit, pursuivant, second, secondary, second-class, second-hand, secondly, sect, sectarian, sectary, sequel, sequen e, sequent, set, subsequent, subsequently, sue, suit, suitable, suitably, suitcase, suite, suitor, unsuitable, unsuited |
| sera | seraglio, serried |
| serenus | serenade, seiene, serenely, serenity |
| serius | serious, seriously, seriousness |
| sermo | sermon |
| sero (join together) | assert, assertion, desert, deserter, desertion, dissertation, exert, exertion, insert, insertion, reassert, serial, series |
| sero (sow) | disseminate, dissemination, season, seasonable, seasonal, seasoning (n.), seminary, unseasonable, well-seasoned |
| serpo | serpent, serpentine |
| serra | sierra |
| serus | soiree |
| servio | s. servus |
| servo | conservation, conservatism, conservative, conservatory, conserve, observable, observance, observant, observation, observatory, observe, observer, preservation, preserver, reservation, reserve, reserved (adj.), reservoir, self-preservation, unobserved, unreserved, unreservedly |
| servus | deserve, deservedly, deserving (adj.), dessert, manservant, serf, serfdom, sergeant, servant, serve, server, service, serviceable, servile, servility, servitor, servitude, subservience, subservient, undeserved |
| severus | asseveration, perseverance, persevere, severe, severely, severity |
| severus | asseveration, perseverance, persevere, severe, severely, severity |
| sex | semester |
| sexus | asexual, sex, sexual |
| sibilo | persiflage |
| siccus | desiccate |
| sido | s. sedeo |
| sidus | consider, considerable, considerably, considerate, consideration, considered (adj.), considering (prep.), desirability, desirable, desire, desirous, inconsiderable, inconsiderate, reconsider, sidereal, undesirable |
| signum | assign, assignment, consign, consignment, countersign, design, designate, designation, designedly, designer, designing (n., adj.), ensign, insignificant, resign, resignation, seal, sign, signal, signalize, signature, signboard, signet, significance, significant, significantly, signification, signify, signpost |
| sileo | silence, silent, silently |
| silex | silica, silicate, silicon |
| silva | savage, savagely, savageness, savagery, silvan (sylvan) |
| similis | assemblage, assemble, assembly, assimilate, assimilation, dissemble, dissembler, dissimilar, dissimulation, ensemble, reassemble, resemblance, resemble, semblance, similar, similarity, similarly, similitude, simulate, simultaneous, simultaneously |
| simplex | simple, simpleness, simpleton, simplicity, simplify, simply |
| simul | s. similis |
| sincerus | insincere, insincerity, sincere, sincerely, sincerity |
| sine | sans, sinecure |
| singuli | single, single-handed, singleness, singly, singular, singularity, singularly |
| sino | site, situate, situated (adj.), situation |
| sinus | cosine, insinuate, insinuation, sine, sinuous |
| sisto | s. sto |
| sobrius | sober, soberly, soberness, sobriety |
| soccus | sock |
| socius | associate, association, dissociate, sociability, sociable, social, socialism, socialist, socialistic, socialize, socially, society, sociological, sociologist, sociology, unsociable |
| sol | parasol, solar, solstice |
| sol(l)emnis | solemn, solemnity, solemnize, solemnly |
| soleo | insolence, insolent, obsolete |
| solidus | consolidate, consolidation, solder, soldier, soldierly, soldiery, solid, solidarity, solidify, solidity, solidly, sou |
| solor | consolation, consolatory, console, disconsolate, disconsolately, inconsolable, solace |
| solum (n.) | insole, soil, sole (n.), subsoil |
| solus | desolate, desolation, sole (adj.), solitary, solitude, solo, sullen, sullenly, sullenness |
| solvo | absolute, absolutely, absolution, absolve, dissolute, dissolve, indissoluble, insoluble, insolvency, insolvent, irresolute, irresolutely, irresolution, resolute, resolutely, resolution, resolve, resolved (adj.), soluble, solution, solve, solvent, undissolved |
| sono | consonance, consonant, dissonance, dissonant, resonance, resonant, resound, sonata, sonnet, sonorous, sound, soundless, unison |
| sorbeo | absorb, absorbed (adj.) absorbent, absorbing (adj.), absorption |
| sordeo | sordid |
| soror | cousin |
| sors | assorted, assortment, consort, sorcerer, sorceress, sorcery, sort |
| spargo | aspersion, dispersal, disperse, dispersion, intersperse, sparese, sparsely |
| spatium | expatiate, space spacing, spacious |
| specio | allspice, aspect, auspice, auspicious, circumspect, circumspection, conspicuous, conspicuously, despicable, despise, despiser, despite, despiteful, disrespect, disrepectful, especial, especially, expect, expectancy, expectant, expectantly, expectation, inauspicious, inconspicuous, inspect, inspection, inspector, irrespective, perspective, persicuity, persicuous, prospect, prospective, prospectively, prospector, respect, respectability, respectable, respectful, respectfully, respecting (prep.), respective, respectively, respite, retrospect, retrospection,retrospective, self-respect, self-respecting, special, speialist, specialization, specialize, specially, specialty, specific, specifically, specification, specify, specimen, specious, spectacle, spectacled, spectacles, spectacular, spectator, specter (re), spectral, spectroscope, speculate, speculation, speculative, speculatively, speculator, spice, spicy, spite, spiteful, suspect, suspicion, suspicious, suspiciously, unexpected, unexpectedly, unsuspected, unsuspecting unsuspicious |
| spes | despair, despairing (adj.), desperado, desperate, desperately, desperation |
| spica | spike |
| spina | porcupine, spinal, spine, spiny |
| spiro | aspirant, aspiration, aspire, conspiracy, conspirator, conspire, dispirit, esprit, expiration, expire, high-spirited, inspirit, perspiration, perspire, public-spirited, respiration, respiratory, respire, spirit, spirited (adj.), spiritless, spiritous, spiritual, spiritualism, spirituality, spiritualize, spiritually, sprightly, sprite, transpiration, transpire, uninspired |
| splendeo | resplendent, splendid, splendidly, splendor (our) |
| spolium | despoil, spoil, spoiler, unspoiled |
| spondeo | correspond, correspondence, correspondent, corresponding (adj.), correspondingly, despond, despondence, despondency, despondent, espousal, espouse, irresponsible, respond, response, responsibility, responsible, responsive, spousal, spouse |
| sponte (abl.) | spontaneity, spontaneous, spontaneously |
| spuma | spume |
| spuo | cuspidor |
| spurius | spurious |
| squaleo | squalid |
| stagnum | stagnant, stagnate, stagnation |
| statuo | s. sto |
| stella | contellation, stellar |
| sterllis | sterile, sterility, sterilization, sterilize |
| sterno | astray, consternation, prostrate, prostration, stratify, stray, street, streetcar, substratum |
| stilla | distil(l), distillation, distilled (adj.), distiller, distillery, instil(l) |
| stilus | style, stylish |
| stimulus | stimulant, stimulate, stimulation |
| astinguo | contradistinction, distinct, distinction, distinctive, distinctly, distinctness, distinguish, distinguishable, distinguished (adj.), extinct, extinction, extinguish, extinguisher, indistinct, indistinctness, indistinguishable, inextinguishable, instinct, instinctive, instinctively, undinstinguishable, unextinguished |
| stipo | constipation, stevedore |
| stips | stipend |
| stipula | stipule, stubble |
| stipulor | stipulate, stipulation |
| stirps | extirpate, extirpation |
| sto | armistice, arrest, assist, assistance, assistant, circumstance, circumstantial, coexist, consist, consistence, consistency, consistent, consistently, consistory, constable, constancy, constant, constantly, constituency, constituent, constitute, constitution, constitutional, constitutionality, contrast, cost, costliness, costly, desist, destination, destine, destiny, destitute, destitution, distance, distant, distantly, equidistant, establish, establishment, estate, exist, existence, extant, inconsistency, inconsistent,inconstancy, inconstant, insist, insistence, insistent, insistently, instability, instance, instant, instantaneous, instantaneously, instanttly, institute, institution, insubstantial, interstate, interstice, irresistible, irresistibly, nonexistent, obstacle, obstetrice, obstinacy, obstinate, obstinately, persist, persistence, persistency, persistent, persistently, predestinate, predestination, predestine, pre-exist, pre-existent, prostitute, prostitution, reconstitute, re-establish, reinstate, resist, resistance, resistant, resistless, rest, restitution, restive, solstice, stability, stabilization, stabilize, stable, stage, stagecoach, staging, staid (adj.), staminate, stance, stanchion, stanza, state, statehouse, stateliness, stately, statement, stateroom, statesman, statement, stateroom, statesman, statesmanlike, statesmanship, station, stationary, stationer, stationery, statist, statistical, statistician, statistics, statuary, stay, subsist, subsistence, substance, substantial, substantially, substantive, substitute, substitution, superstition, superstitious, transubstantiation, unassisted, unconstitutional, unstable, unsubstantial |
| stolidus | stolid, stolidly |
| strenuus | strenuous, strenuously |
| strepo | obstreperous |
| stria | striated |
| strideo | strident |
| stringo | astringent, constrain, constraint, constrict, constriciton, constrictive, distrain, distress, distressful, district, overstrain, prestige, restrain, restrain, restrict, restriction, restrictive, strain, strainer, strait, straiten, stress, strict, strictly, strictness, stricture, stringent, unrestrained |
| struo | construct, construction, constructive, construe, destroy, destroyer, destruction, destructive, indestructible, instruct, instrction, instructive, instructor, instrument, instrumental, instrumentality, isconstrue, obstruct, obstruction, reconstruct, reconstruction, structural, structure, susperstructure |
| studeo | etude, student, studied (adj.), studio, studious, study |
| stupeo, | stupefaction, stupefy, stupendous, stupid, stupidity, stupidly |
| suadeo | dissuade, persuade, persuasion, persuasive, persuasively |
| suavis | assuage, suave |
| subter (adv.) | subterfuge |
| subitus | s. eo |
| sublimis | sublimate, sublime, sublimity |
| sucus | succulence, succulent |
| sudo | exude |
| suetus | accustom, accustomed (adj.), costume, costumier, custom, customary, customer, customhouse, desuetude, unaccustomed |
| suffragiu | suffragan, suffrage |
| sugo | suction |
| sui (gen.) | suicide |
| sulp(h)ur | sulphate, sulphide, sulphureous, sulphuric, sulphurous |
| sum (esse) | absence, absent, absentee, absently, absent-minded, disinterested, disinterestedness, entity, essence, essential, impossibility, impossible, interest, interesting (adj.), misrepresentation, nonentity, omnipresent, possibility, possible, possibly, presence, present, presentable, presentation, present-day, presently, presentment, puissance, puissant, quintessence, represent, representation, representative, uninteresting |
| summus | consomme, consummate, consummation, sum, summarily, summarize, summary, summit |
| sumo | , consumptive, presumable, presumably, presume, presumption, presumptive, presumptuous, reassume, resume, resume (n.), resumption, sumptuous, unassuming |
| suo | suture |
| super | insuperable, somersault, soprano, sovereign, sovereignty, sovran, superb, superiority, supernal, supremacy, supreme, supremely |
| supinus | supine |
| surdus | absurd, absurdity, absurdly |
