An open clash between two opposing groups (or individuals):
— The harder the conflict the more glorious the triumph.

synonyms: battle, struggle.

Roget 708: opposition, antagonism; oppugnancy^†, oppugnation^†; impugnation^†; contrariety; contravention; counteraction etc. 179; counterplot.    cross fire, undercurrent, head wind.    clashing, collision, conflict.    competition, two of a trade, rivalry, emulation, race.    absence of aid etc. 708; resistance etc. 719; restraint etc. 751; hindrance etc. 706.    ... show more

Roget 24: disagreement; discord, discordance; dissonance, dissidence, discrepancy; unconformity etc. 83; incongruity, incongruence^†; discongruity^†, mesalliance; jarring etc. v.; dissension etc. 713; conflict etc. (opposition) 708; bickering, clashing, misunderstanding, wrangle.    disparity, mismatch, disproportion; dissimilitude, inequality; disproportionateness etc. adj.^†; variance, divergence, repugnance.    unfitness etc. adj.; inaptitude, impropriety; inapplicability etc. adj.; inconsistency, inconcinnity^†; irrelevancy etc. (irrelation) 10.    misjoining^†, misjoinder^†; syncretism^†, intrusion, interference; concordia discors [Lat.].    fish out of water.    ... show more

Dutch: zeeslag, veldslag, slag, conflict, incident, strijd
Polish: konflikt, konfrontacja

Opposition between two simultaneous but incompatible feelings.

A hostile meeting of opposing military forces in the course of a war.

synonyms: battle, engagement, fight.

Roget 720: contention, strife; contest, contestation^†; struggle; belligerency; opposition etc. 708.    controversy, polemics; debate etc. (discussion) 476; war of words, logomachy^†, litigation; paper war; high words etc. (quarrel) 713; sparring etc. v.. competition, rivalry; corrivalry^†, corrivalship^†, agonism^†, concours^†, match, race, horse racing, heat, steeple chase, handicap; regatta; field day; sham fight, Derby day; turf, sporting, bullfight, tauromachy^†, gymkhana^†; boat race, torpids^†.    wrestling, greco-roman wrestling; pugilism, boxing, fisticuffs, the manly art of self-defense; spar, mill, set-to, round, bout, event, prize fighting; quarterstaff, single stick; gladiatorship^†, gymnastics; jiujitsu, jujutsu, kooshti^†, sumo; athletics, athletic sports; games of skill etc. 840.    shindy^†; fracas etc. (discord) 713; clash of arms; tussle, scuffle, broil, fray; affray, affrayment^†; velitation^†; colluctation^†, luctation^†; brabble^†, brigue^†, scramble, melee, scrimmage, stramash^†, bushfighting^†.    free fight, stand up fight, hand to hand, running fight.    conflict, skirmish; rencounter^†, encounter; rencontre^†, collision, affair, brush, fight; battle, battle royal; combat, action, engagement, joust, tournament; tilt, tilting [Mediev.]; tournay^†, list; pitched battle.    death struggle, struggle for life or death, life or death struggle, Armageddon^†.    hard knocks, sharp contest, tug of war.    naval engagement, naumachia^†, sea fight.    duel, duello [It]; single combat, monomachy^†, satisfaction, passage d'armes [Fr.], passage of arms, affair of honor; triangular duel; hostile meeting, digladiation^†; deeds of arms, feats of arms; appeal to arms etc. (warfare) 722.    pugnacity; combativeness etc. adj.; bone of contention etc. 713.    ... show more

Dutch: duel, gevecht, kamp, slag, treffen, tweegevecht, tweekamp, worsteling
Polish: bitwa

A state of opposition between persons or ideas or interests.

Dutch: conflict, strijd, conflictsituatie
Polish: konflikt

An incompatibility of dates or events.

Polish: kolizyjność

Opposition in a work of drama or fiction between characters or forces (especially an opposition that motivates the development of the plot).

A disagreement or argument about something important:
— The familiar conflict between Republicans and Democrats.

synonyms: difference, difference of opinion, dispute.

Dutch: meningsverschil, onenigheid, onderscheid, verschil, geschil, dispuut, twistgesprek
Polish: dyferencja, spór

Be in conflict.

Roget 713: be discordant etc. adj.; disagree, come amiss etc. 24; clash, jar, jostle, pull different ways, conflict, have no measures with, misunderstand one another; live like cat and dog; differ; dissent etc. 489; have a bone to pick, have a crow to pluck with.    fall out, quarrel, dispute; litigate; controvert etc. (deny) 536; squabble, wrangle, jangle, brangle^†, bicker, nag; spar etc. (contend) 720; have words etc. n.. with; fall foul of.    split; break with, break squares with, part company with; declare war, try conclusions; join issue, put in issue; pick a quarrel, fasten a quarrel on; sow dissension, stir up dissension etc. n.; embroil, entangle, disunite, widen the breach; set at odds, set together by the ears; set against, pit against.    get into hot water, fish in troubled waters, brawl; kick up a row, kick up a dust; turn the house out of window.    ... show more

Dutch: conflicteren, confligeren, met

Go against, as of rules and laws:
— This behavior conflicts with our rules.

synonyms: contravene, infringe, run afoul.