concurrence

1 the occurrence or existence of several things at once the concurrence of my birthday and the concert by my favorite rock band made my preference for a birthday present pretty obvious Synonyms coexistence, coincidence, concurrency Related Words development, happening, occurrence; coevality, contemporaneousness, simultaneousness, synchronism, synchrony Near Antonyms asynchrony (or asynchronism)

2 the state of being of one opinion about something looked for some sign of concurrence among the delegates to the conference Synonyms accord, agreement, concurrency, consensus, unanimity, unisonRelated Words accession, adhesion, assent, assentation, consent; acceptance, acquiescence, concession, embrace, embracement; approbation, approval, favor; alliance, collaboration, collusion, complicity, conspiracy; compliance, concert, concertedness, concord, concordance, conformity, consonance, harmony, oneness, solidarity, understanding, union; empathy, rapport, sympathyNear Antonyms discord, dissension (also dissention); dissent, opposition, resistance; disapprobation, disapproval, disfavorAntonyms conflict, disagreement, dissensus

3 the approval by someone in authority for the doing of something we needed the concurrence of the boss before proceeding with the project Synonyms allowance, authorization, clearance, permission, consent, granting, green light, leave, license (or licence), sanction, sufferance, warrantRelated Words imprimatur, seal, signature, stamp; accreditation, certification; liberty, pass; concession, patent, permit; tolerance, toleration; acceptance, acquiescence, agreement, assent, OK (or okay); accord, grantNear Antonyms denial, refusal, rejection, revocation; taboo (also tabu); injunction, veto; deterrence, discouragement, repression, suppression; ban, embargo, exclusionAntonyms interdiction, prohibition, proscription