大会|たいかいtaikai[0]heiban (flat)

1. nounmass meeting; convention; rally; conference; assembly; gathering
   彼かれか私のどちらかが大会たいかいに出席しゅっせきしなければならない。↗

   Either he or I have to attend the convention.
2. nountournament; competition; contest; meet
   あなたはシートベルトをちゃんと使用しようしていたとして、カリフォルニア州かりふぉるにあしゅう交通こうつう安全あんぜん大会たいかいにおいて賞金しょうきん５０００ドルを獲得かくとくされました。↗

   You have just won a prize of $5000 in a California state safety competition for proper use of your seatbelt.
3. noungrand event

• Synonym集会しゅうかいNeutralA gathering of people for a common purpose, as in 「抗議集会」. It mostly points to the gathering itself; 「大会」 also covers tournaments and an organization's general meeting.
• Synonym会議かいぎNeutralA meeting held to discuss or decide something, as in 「会議室」. Size is unrestricted; 「大会」 refers to a large gathering, a general meeting, or a competition.
• SynonymコンベンションWrittenA written-style loanword for large conferences, delegates' assemblies, or trade shows, as in 「コンベンションセンター」. It can also mean an established custom.
• Related協議会きょうぎかいFormalA formal term for an organization or meeting set up to consult on a matter, as in 「地域協議会」. The focus is on consultation, and it is not necessarily large.
• Antonym小会WrittenA small-scale gathering, the opposite of 「大会」 in size. A written word that is rarely used today.

Use 「大会」 for a large gathering, an organization's general meeting, or a tournament. For a meeting to discuss and decide matters say 「会議」; for a crowd assembling, 「集会」; for a consultative body, 「協議会」.

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

1. 多おおくの人ひとが集あつまる会かい。
2. 組織そしきや団体だんたいが催もよおす全体的ぜんたいてきな会合かいごう。
3. 大規模だいきぼな競技会きょうぎかいや選考会せんこうかい。
4. 規模きぼの大おおきな法会ほうえ。