"unfair, unjust," 1660s, from in- (1) "not, opposite of" + equitable, which is ultimately from Latin aequus "even, just, equal." Related: Inequitably. The same formation in English has also meant "impassable on horses, unfit for riding over" (1620s), from Latin inequabilis, from equus "a horse" (see equine).
late 14c., "belonging to a beast," c. 1400, "having the qualities of a beast," from Old French bestial (13c.) "relating to animals; beast-like, stupid, foolish, brutal" and directly from Latin bestialis "like a beast," from bestia (see beast).
The sense of "below the dignity of a human" in English is from c. 1400, and often is unjust to beasts. When the beast of the Book of Revelation was meant, the adjectival form bestian (1650s) sometimes was used.
late 14c., oppressen, "to press unduly upon or against, overburden, weigh down," also figuratively, "overwhelm overpower" (of sickness, grief, etc.); also "burden with cruel, unjust, or unreasonable restraints, treat with injustice or undue severity, keep down by an unjust exercise of power," from Old French opresser "oppress, afflict; torment, smother" (13c.), from Medieval Latin oppressare, frequentative of Latin opprimere "press against, press together, press down;" figuratively "crush, put down, subdue, prosecute relentlessly" (in Late Latin "to rape"), from assimilated form of ob "against" (see ob-) + premere "to press, hold fast, cover, crowd, compress" (from PIE root *per- (4) "to strike"). In Middle English also "to rape." Related: Oppressed; oppressing.
It is the due [external] restraint and not the moderation of rulers that constitutes a state of liberty; as the power to oppress, though never exercised, does a state of slavery. [St. George Tucker, "View of the Constitution of the United States," 1803]
late 14c., "harm, damage, loss; a specific injury," from Anglo-French injurie "wrongful action" (Old French injure, 13c.), from Latin iniuria "wrong, an injustice, insult, unlawful violence, assault, damage, harm," noun use of fem. of iniurius "wrongful, unjust, unlawful," from in- "not, opposite of" (see in- (1)) + ius (genitive iuris) "right, law" (see jurist).
late 14c., "disgraceful, shameful, without honesty or integrity; unjust, unfair, disposed to deceive or cheat; unmodest, unchaste," from Old French deshoneste (13c., Modern French déshonnête) "dishonorable, horrible, indecent," perhaps from a Medieval Latin or Gallo-Roman compound of Latin dis- "not" (see dis-) + honestus "honorable; deserving honor, respectable," from honos "honor, dignity, office, reputation," which is of unknown origin. The Latin formation was dehonestus. Related: Dishonestly.
late 14c., "unjust invasion of property or usurpation of office," from Old French intrusion (14c.), from Medieval Latin intrusionem (nominative intrusio) "a thrusting in," noun of action from past participle stem of Latin intrudere "to thrust in, force in," from in- "in" (from PIE root *en "in") + trudere "to thrust, push," from PIE *treud- "to press, push, squeeze" (see threat).
Meaning "a thrusting or pushing in" is from 1590s; that of "act of intruding" is from 1630s. Geological sense is from 1816.
c. 1300, "hostility, malevolence; a hostile action," from Old French iniquité, iniquiteit "wickedness; unfavorable situation" (12c.), from Latin iniquitatem (nominative iniquitas) "unequalness, unevenness," figuratively "unfavorableness, unfairness, injustice," noun of quality from iniquus "unjust, unequal; slanting, steep," from in- "not" (see in- (1)) + aequus "just, equal" (see equal (adj.)).
For the vowel change in the Latin compound, see acquisition. Meaning "evil, wickedness" is from late 14c. Old Iniquity (1610s) was a comic or buffoonish character in old morality plays, representing vice.
mid-14c., oppressioun, "cruel or unjust use of power or authority," from Old French opression (12c.), from Latin oppressionem (nominative oppressio) "a pressing down; violence, oppression," noun of action from past-participle stem of opprimere "press against, press together, press down;" figuratively "crush, put down, subdue, prosecute relentlessly" (in Late Latin "to rape"), from assimilated form of ob"against" (see ob-) + premere "to press, hold fast, cover, crowd, compress" (from PIE root *per- (4) "to strike").
Meaning "action of weighing on someone's mind or spirits" is from late 14c. Sense of "whatever oppresses or causes hardship" is from late 14c. In Middle English also "rape."
c. 1300, "an inquest, a judicial inquiry;" early 14c., "a search for something, the act of seeking, pursuit" (especially in reference to hounds seeking game in the hunt), from Old French queste "search, quest, chase, hunt, pursuit; inquest, inquiry" (12c., Modern French quête), properly "the act of seeking," and directly from Medieval Latin questa "search, inquiry," alteration of Latin quaesitus (fem. quaesita) "sought-out, select," past participle of quaerere "seek, gain, ask" (see query (n.)).
The medieval romance sense of "adventure undertaken by a knight" (especially the search for the Grail) is attested from late 14c. Chaucer has questmonger (late 14c.), "one who profits from an unjust action at law."