invective (en)

insulting, abusive, or highly critical language

inveigh (en)

(verb) to protest or complain bitterly or vehemently; rail

inveigle (en)

(verb) to win over by wiles; entice / (verb) to acquire by ingenuity or flattery; wangle

inveterate (en)

firmly established by long persistence; confirmed in habit

invidious (en)

(adjective) tending to cause discontent, animosity, or envy / (adjective) envious / (adjective) of an unpleasant or objectionable nature; obnoxious / (adjective) of a kind to cause harm or resentment

involuted (en)

complicated; abstruse; curled inwards

ipseity (en)

selfhood; individual identity (from Latin "ipse" for self)

irredentist (en)

(noun) a political principle or policy directed toward the incorporation of irredentas within the boundaries of their historically or ethnically related political unit / a person advocating the restoration to their country of any territory formerly belonging to it

irruptions (en)

a sudden and violent entry, or breaking in (differs from eruption, which is breaking out)

isthmian (en)

(adjective) of or relating to the Isthmus of Panama connecting the North American and South American continents (An isthmus is a narrow strip of land that connects two larger landmasses and separates two bodies of water)

ital (en)

idk

jacaranda (en)

a type of flowering plant native to tropical and subtropical regions

Jacobin (en)

The Society of the Friends of the Constitution, after 1792 renamed Society of the Jacobins, Friends of Freedom and Equality, commonly known as the Jacobin Club (Club des Jacobins) or simply the Jacobins; the most famous and influential political club in the development of the French Revolution

jacquerie (en)

a communal uprising or revolt; named after a popular revolt by peasants that took place in northern France in the early summer of 1358 during the Hundred Years' War (which was itself named after the "jacque", or tunic, that the peasants wore)

jalopies (en)

an old car in a dilapidated condition

jalousies (en)

(noun) a blind with adjustable horizontal slats for admitting light and air while excluding direct sun and rain / (noun) a window made of adjustable glass louvers that control ventilation

jamboree (en)

a large celebration or party, typically a lavish and boisterous one

janissary (en)

(noun) a member of the Turkish infantry forming the Sultan's guard between the 14th and 19th centuries

jejune (en)

(adjective) lacking nutritive value / devoid of significance or interest; dull / naive, simplistic, and superficial

jeremiad (en)

(noun) a long, mournful complaint or lamentation; a list of woes

jeroboam (en)

(noun) an oversize wine bottle holding about three liters

Jetztzeit (de)

present time (compound of jetzt "now" + Zeit "time"); a term coined by Walter Benjamin

Jevonian revolution (en)

named after William Stanley Jevons, though referring to a shift in economic thought to which many contributed; switch from a focus to class-based analysis to using individual consumers as the basis

jihad (en)

(noun) a holy war waged on behalf of Islam as a religious duty / (noun) a personal struggle in devotion to Islam especially involving spiritual discipline / (noun) a crusade for a principle or belief

joists (en)

lengths of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling