disband (v.) Look up disband at Dictionary.com
1590s, from Middle French desbander (Modern French débander), in military sense, from des- (see dis-) + band (v.). Related: Disbanded; disbanding.
disbar (v.) Look up disbar at Dictionary.com
"deprive of the privileges of a barrister," 1630s; see dis- "opposite of" + bar in the legal sense. Related: Disbarred; disbarring; disbarment.
disbelief (n.) Look up disbelief at Dictionary.com
1670s; see dis- + belief. A Latin-Germanic hybrid.
disbelieve (v.) Look up disbelieve at Dictionary.com
1640s; see dis- + believe. Related: Disbelieved; disbelieving; disbeliever.
disburse (v.) Look up disburse at Dictionary.com
1520s, disbourse, from Old French desbourser (13c.) "extract (money) from a purse, spend (money)," from des- (see dis-) + bourse "purse" (see bursar). Related: Disbursed; disbursing.
disbursement (n.) Look up disbursement at Dictionary.com
1590s; see disburse + -ment.
disc (n.) Look up disc at Dictionary.com
Latinate spelling preferred in British English for most uses of disk (q.v.). American English tends to use it in the musical recording sense; originally of phonograph records, recently of compact discs. Hence, discophile "enthusiast for gramophone recordings" (1940).
discalceate (adj.) Look up discalceate at Dictionary.com
"unshod, barefoot," 1650s, from Latin discalceatus, from dis- (see dis-) + calceatus, past participle of calceare "to furnish with shoes," from calceus "shoe."
discard (v.) Look up discard at Dictionary.com
1590s, literally "to throw a card away," from dis- "away" + card (n.). Figurative use (in a non-gaming sense) is first recorded 1580s. In the card-playing sense, decard is attested by 1550s. Related: Discarded; discarding. As a noun, from 1742.
discern (v.) Look up discern at Dictionary.com
late 14c., from Old French discerner (13c.) "distinguish (between), separate" (by sifting), and directly from Latin discernere "to separate, set apart, divide, distribute; distinguish, perceive," from dis- "off, away" (see dis-) + cernere "distinguish, separate, sift" (see crisis). Related: Discerned; discerning.
discernible (adj.) Look up discernible at Dictionary.com
also discernable, 1560s, from French discernable, from discerner (see discern). Form with -a- was more common at first; spelling changed to -i- 17c. to conform to Latin discernibilis.
discerning Look up discerning at Dictionary.com
"action of perceiving," late 14c., verbal noun from discern. As a present participle adjective, attested from c.1600.
discernment (n.) Look up discernment at Dictionary.com
1580s; see discern + -ment.
discharge (v.) Look up discharge at Dictionary.com
early 14c., "to exempt, exonerate, release," from Old French deschargier (12c., Modern French décharger) "to unload, discharge," from Late Latin discarricare, from dis- "do the opposite of" (see dis-) + carricare "load" (see charge (v.)).

Meaning "to unload, to free from" is late 14c. Of weapons, from 1550s. The electrical sense is first attested 1748. Meaning "to fulfill, to perform one's duties" is from c.1400. Related: Discharged; discharging.
discharge (n.) Look up discharge at Dictionary.com
late 14c., "relief from misfortune," see discharge (v.). Meaning "release from work or duty" is from early 15c.
dischargeable (adj.) Look up dischargeable at Dictionary.com
mid-15c., from discharge (v.) + -able.
disciple (n.) Look up disciple at Dictionary.com
Old English discipul (fem. discipula), Biblical borrowing from Latin discipulus "pupil, student, follower," said to be from discere "to learn" [OED, Watkins], from a reduplicated form of PIE root *dek- "to take, accept" (see decent).

But according to Barnhart and Klein, from a lost compound *discipere "to grasp intellectually, analyze thoroughly," from dis- "apart" (see dis-) + capere "to take, take hold of" (see capable). Compare Latin capulus "handle" from capere. Sometimes glossed in Old English by þegn (see thane).
discipleship (n.) Look up discipleship at Dictionary.com
1540s, from disciple + -ship.
disciplinable (adj.) Look up disciplinable at Dictionary.com
mid-15c., from discipline + -able.
disciplinarian (n.) Look up disciplinarian at Dictionary.com
"one who enforces order," 1630s, see discipline; earlier used of Puritans who wanted to establish the Presbyterian "discipline" in England (1580s). Meaning "advocate of greater discipline" is from 1746.
disciplinary (adj.) Look up disciplinary at Dictionary.com
1590s, from Medieval Latin disciplinarius, from Latin disciplina (see discipline (n.)).
discipline (n.) Look up discipline at Dictionary.com
early 13c., "penitential chastisement; punishment," from Old French descepline (11c.) "discipline, physical punishment; teaching; suffering; martyrdom," and directly from Latin disciplina "instruction given, teaching, learning, knowledge," also "object of instruction, knowledge, science, military discipline," from discipulus (see disciple (n.)).

Sense of "treatment that corrects or punishes" is from notion of "order necessary for instruction." The Latin word is glossed in Old English by þeodscipe. Meaning "branch of instruction or education" is first recorded late 14c. Meaning "military training" is from late 15c.; that of "orderly conduct as a result of training" is from c.1500.
discipline (v.) Look up discipline at Dictionary.com
c.1300; see discipline (n.). Related: Disciplined; disciplines; disciplining.
disclaim (v.) Look up disclaim at Dictionary.com
c.1400, from Anglo-French disclaimer, Old French desclamer "disclaim, disavow," from des- (see dis-) + clamer "to call, cry out, claim" (see claim (v.)). Related: Disclaimed; disclaiming.
disclaimer (n.) Look up disclaimer at Dictionary.com
"denial of a claim," mid-15c., from Anglo-French disclaimer "disavowal, denial;" see disclaim. Infinitive used as a noun in Old French. Compare waiver, etc.
disclose (v.) Look up disclose at Dictionary.com
late 14c., from Old French desclos "open, exposed, plain, explicit," past participle of desclore (Modern French déclore) "open, break open, unlock, reveal," from des- (see dis-) + clore "to close" (see close (v.)). Related: Disclosed; disclosing.
disclosure (n.) Look up disclosure at Dictionary.com
1590s; see disclose + -ure. Formed in English, perhaps on model of closure.
disco (n.) Look up disco at Dictionary.com
1964, American English shortening of discotheque; sense extended by 1972 to the kind of music played there.
discobolus (n.) Look up discobolus at Dictionary.com
"discus thrower," from Latin, from Greek discobolos, from diskos "quoit, discus" (see disk (n.)) + -bolos "thrower," related to ballein "to throw" (see ballistics).
discography (n.) Look up discography at Dictionary.com
1933; see disc + -graphy.
discolor (v.) Look up discolor at Dictionary.com
late 14c., from Old French descolorer, from des- (see dis-) + colorer "to color," from Latin colorare (see coloration). Related: Discolored; discoloring.
discoloration (n.) Look up discoloration at Dictionary.com
1640s, noun of action from discolorate (early 15c.), from past participle stem of Medieval Latin discolorare (see discolor) + -ation.
discolour (v.) Look up discolour at Dictionary.com
chiefly British English spelling of discolor (q.v.); for ending see -or. Related: Discoloured; discolouring; discolouration.
discombobulate (v.) Look up discombobulate at Dictionary.com
1834, American English, fanciful coinage of a type popular then (originally discombobricate). Related: discombobulating; discombobulation.
discombobulated (adj.) Look up discombobulated at Dictionary.com
1834 (as discombobracated); see discombobulate.
discomfit (v.) Look up discomfit at Dictionary.com
c.1200, as an adjective, from Old French desconfit "vanquished, defeated," past participle of desconfire "to defeat, destroy," from des- "not" (see dis-) + confire "make, prepare, accomplish," from Latin conficere (see confection).

Used as a verb in English from c.1300. Weaker sense of "disconcert" is first recorded 1520s in English, probably by confusion with discomfort. Related: Discomfited; discomfiting.
discomfiture (n.) Look up discomfiture at Dictionary.com
mid-14c., from Old French desconfiture "rout, defeat" (12c.; Modern French déconfiture), from desconfit (see discomfit).
discomfort (n.) Look up discomfort at Dictionary.com
mid-14c., from Old French desconfort (12c.), from desconforter (v.), from des- (see dis-) + conforter (see comfort (v.)).
discomfort (v.) Look up discomfort at Dictionary.com
c.1300, "to deprive of courage," from Old French desconforter; see discomfort (n.). Related: Discomforted; discomforting.
disconcert (v.) Look up disconcert at Dictionary.com
1680s, from Middle French disconcerter (Modern French déconcerter) "confused," from dis- "do the opposite of" (see dis-) + concerter (see concert). Related: Disconcerted; disconcerting; disconcertingly.
disconnect (v.) Look up disconnect at Dictionary.com
1770; see dis- + connect. Perhaps a back-formation from disconnection. Related: Disconnected; disconnecting.
disconnection (n.) Look up disconnection at Dictionary.com
1735, disconnexion; see dis- "not" + connection. Spelling disconnection attested from 1769.
disconsolate (adj.) Look up disconsolate at Dictionary.com
c.1400, from Medieval Latin disconsolatus "comfortless," from Latin dis- "away" (see dis-) + consolatus, past participle of consolari (see console (v.)). Related: Disconsolately.
discontent (v.) Look up discontent at Dictionary.com
late 15c., from dis- "not" + content (v.). Related: Discontented; discontentedly; discontentment; discontentedness.
discontent (adj.) Look up discontent at Dictionary.com
mid-15c., from dis- + content (adj.).
discontent (n.) Look up discontent at Dictionary.com
"state or condition of discontent," 1580s, from dis- + content (n.). Winter of our discontent is from "Richard III."
discontinuance (n.) Look up discontinuance at Dictionary.com
late 14c., from Anglo-French, from Old French discontinuer (see discontinue).
discontinue (v.) Look up discontinue at Dictionary.com
late 14c., from Old French discontinuer (14c.), from Medieval Latin discontinuare, from dis- "not" (see dis-) + Latin continuare "to continue" (see continue). Related: Discontinued; discontinuity; discontinuous; discontinuation.
discord (n.) Look up discord at Dictionary.com
early 13c., descorde, "unfriendly feeling, ill will;" also "dissention, strife," from Old French descorde (12c.) "disagreement," from Latin discordia, from discors (genitive discordis) "disagreeing, disagreement," from dis- "apart" (see dis-) + cor (genitive cordis) "heart" (see heart). Musical sense is late 14c.
discord (v.) Look up discord at Dictionary.com
c.1300, from Old French discorder (13c.), from Latin discordare (see discord (n.)).