separatist, n. nonconformist, dissenter, sectary, schismatic.

sequel, n. continuation, conclusion, consequence, result, outcome.

sequence, n. succession, series, following; result, sequel, consequence.

sequestered, a. secluded.

sere, a. dry, withered, sear.

serenade, n. nocturne; (burlesque) charivari, callithump.

serene, a. calm, placid, composed, tranquil, unruffled, unclouded.

serenity, n. calmness, composure, tranquillity; cloudlessness, clearness.

serf, n. bondman, thrall, slave, bond servant, villein.

serfdom, n. thralldom, slavery, subjection, bondage, servitude.

serious, a. grave, earnest, thoughtful, solemn, staid, sober, demure, saturnine; momentous, important, weighty, grave; dangerous, alarming, critical.

seriousness, n. gravity.  Antonyms:  levity, frivolity, triviality.

sermon, n. homily, exhortation (religious), discourse.  Associated words:  homiletics, homiletic, homilist.

serpent, n. snake, reptile, ophidian; basilisk, cockatrice, amphisbaena.  Associated Words:  ophiology, ophiolatry, ophiophagous, ophiography, herpetology, ophidian, ophiologic, ophiomorphous, herpetologist, herpetotomy, herpetotomist, ophiologist, ophiomancy, echidna, echidnine, fang, uraeus, serpentry, reptilian, anguiform, anguine.

serpentine, a. serpentlike, subtle, sinuous, winding, zigzag, tortuous.

servant, n. dependent, subaltern, subordinate, helper, servitor, attendant, retainer; domestic, maid, menial, drudge, valet, flunky, groom, coistril, lackey, underling, fag, coolie, butler, factotum, orderly, soubrette, equerry.

serve, v. attend, wait upon; promote, advance, contribute, conduce to; subserve; treat, requite; satisfy, suffice, content, answer, do; deal, distribute.

service, n. labor, employment, office, duty, business, function, ministry; ritual, ceremony, rite; advantage, benefit, avail, use, utility; homage, obeisance.

servile, a. slavish, abject, cringing, groveling, obsequious; dependent, enslaved.

servitude, n. bondage, enslavement.

set, v. place, put, fix, establish, locate, station; adjust, regulate, adapt; oppose, obstruct; appoint, assign.

set, a. fixed, immovable, rigid, firm, obstinate, inflexible, unyielding; regular, uniform, established, prescribed, ordained, appointed.

set, n. clique, group, class, party, coterie, circle, band, company.

set aside. displace, supersede.

setback, n. (Colloq.) backset, check, repulse, reverse, relapse.

set-off, n. offset; counterclaim, equivalent.

set-out, n. display, equipage, rig, turnout; (Colloq.) preparations.

settle, v. fix, establish; ordain, install; adjust, determine, decide; sink, subside, fall; precipitate; quiet, calm, pacify, tranquillize; colonize, people.

settlement, n. establishment; ordination, installation; colonization, colony; adjustment; subsidence.