開幕|かいまくkaimaku[0]heiban (flat)

1. noun, suru verb, transitive verb, intransitive verbraising the curtain
2. noun, suru verb, transitive verb, intransitive verbopening (of an event); start; beginning
   オープン戦おーぷんせんが終おわり、いよいよ開幕かいまくだ。↗

   The exhibition games are over and the regular season finally begins.

• Synonym開会かいかいNeutralFor meetings and conferences being called to order, as in 「開会式」; 「開幕」 is for performances, matches and exhibitions raising the curtain.
• Synonym幕開けまくあけNeutralOften figurative for the dawn of a new era or season, as in 「新時代の幕開け」; 「開幕」 is the formal opening of an event.
• Synonym始めるはじめるNeutralThe general verb for starting to do something, with any object; 「開幕」 with 「する」 is a verb too, mostly for events opening or a new phase beginning.
• SynonymはじめNeutralIdentical to the 「始め」 above: beginnings in general; 「開幕」 is mostly an event raising its curtain, or a new era figuratively.
• Related開始かいしNeutralThe broadest word for starting anything, as in 「試合開始」; 「開幕」 is mostly for shows, matches and exhibitions, or an era figuratively.
• Related最初さいしょNeutralThe earliest point in time or order, as in 「最初のページ」; 「開幕」 is the act of an event raising its curtain.
• Related当初とうしょNeutralThe period when something first began, often contrasted with later, as in 「当初の予定」; not interchangeable with 「開幕」.
• Related発足ほっそくNeutralAn organization, group or system formally launching, as in 「新内閣が発足」; 「開幕」 is for shows, matches and similar events.
• Related始まりはじまりNeutralA start, beginning or origin of anything at all; 「開幕」 is mostly an event raising its curtain, or figuratively a new period.
• Related初演しょえんNeutralThe first staging of a play or piece of music; 「開幕」 is a performance or whole event or season starting, not necessarily for the first time.
• RelatedスタートNeutralA loanword for starting, racing or setting off, common in speech; 「開幕」 stresses an event's formal opening.
• RelatedはじめNeutralIdentical to the 「始め」 above: beginnings in general; 「開幕」 is mostly an event raising its curtain, or a new era figuratively.
• RelatedキックオフNeutralA loanword for the kickoff in soccer, also figuratively a project launch, as in 「キックオフ会議」; 「開幕」 stresses an event's opening.
• Related幕開きまくあきNeutralThe curtain rising on a play, or figuratively the start of something; used less often than 「幕開け」. 「開幕」 stresses an event's formal opening.
• Related出だしでだしNeutralThe opening stretch of something and how it goes, as in 「出だし好調」; 「開幕」 is the act of an event formally opening.
• Related滑り出しすべりだしNeutralHow things go in the opening stage, as in 「好調な滑り出し」; 「開幕」 refers to the act of an event formally opening.
• RelatedしょっぱなCasualColloquial for the very start, as in 「しょっぱなから失敗」; 「開幕」 is more formal and refers to an event's opening.
• Antonym閉幕へいまくNeutralThe direct opposite of 「開幕」: shows, matches and exhibitions closing, as in 「大会が閉幕する」.
• Antonym終幕しゅうまくWrittenWritten/formal prose for a play's final act, or how things end; it opposes 「開幕」 as ending opposes beginning.
• Antonym閉会へいかいNeutralA meeting or conference ending; its direct opposite is 「開会」, and it only mirrors 「開幕」 in the sense of a conference opening versus closing.

Use 「開幕」 for shows, matches and exhibitions opening, as in 「オリンピック開幕」. For meetings being called to order use 「開会」; for the figurative dawn of a new era, 「幕開け」; for starting things in general, 「開始」. The direct antonym is 「閉幕」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 幕まくが開ひらいて演劇えんげきなどが始はじまること。
2. 物事ものごとが始はじまること。
3. 幕府ばくふをひらくこと。