to come into collision or disagreement; be contradictory, at variance, or in opposition; clash

The account of one eyewitness conflicted with that of the other. My class conflicts with my going to the concert.

to fight or contend; do battle.

a fight, battle, or struggle, esp. a prolonged struggle; strife.

controversy; quarrel

conflicts between parties.

discord of action, feeling, or effect; antagonism or opposition, as of interests or principles

a conflict of ideas.

a striking together; collision.

incompatibility or interference, as of one idea, desire, event, or activity with another

a conflict in the schedule.

Psychiatry . a mental struggle arising from opposing demands or impulses.

noun

agreement , calm , concord , peace , stability , accord , harmony

verb

agree , be calm , harmonize

noun

battle , clash , collision , combat , competition , contention , contest , emulation , encounter , engagement , fracas , fray , rivalry , set-to , strife , striving , struggle , tug-of-war , war , affray , animosity , antagonism , bad blood * , brush , concours , dance , difference , disaccord , dispute , dissension , dissent , dissidence , disunity , divided loyalties , faction , factionalism , flap , friction , fuss , hassle , hostility , interference , meeting , opposition , row , ruckus , run-in , variance , belligerency , confrontation , warfare , difficulty , discord , discordance , dissentience , dissonance , inharmony , schism , antimony , argument , clashing , confliction , contrariety , crossfire , deadlock , discrepancy , disharmony , disparity , encroachment , fight , impingement , incompatibility , incongruity , internecine , irreconcilability , scrimmage , skirmish , stalemate

verb

brawl , bump heads with , clash , collide , combat , contend , contest , contrast , cross swords with , differ , disaccord , disagree , discord , disharmonize , disturb , fight , interfere , jar , lock horns with , mismatch , oppose , romp , run against tide , scrap , slug , square off with , strive , struggle , tangle , vary , contradict , action , animosity , antagonism , argument , battle , be contradictory , bout , brush , collision , competition , controversy , difference , dispute , dissension , duel , encounter , faction , fray , friction , hostility , melee , mutiny , rebellion , rift , scuffle , setto , strife , tug-of-war , war , warfare