公開|こうかいkoukai[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. noun, suru verb, transitive verbopening to the public; making available to the public; exhibiting; unveiling; release (of a film, information, etc.); disclosure; publication
    この公園こうえんはすべての人ひとに公開こうかいされている。↗
    The park is open to everybody.
Conjugation
Dictionary form公開する(こうかいする)
Polite (masu)公開します(こうかいします)
Negative (nai)公開しない(こうかいしない)
polite (masen)公開しません(こうかいしません)
classical zu / nu公開せず・公開せぬ(こうかいせず・こうかいせぬ)
Past (ta)公開した(こうかいした)
polite (mashita)公開しました(こうかいしました)
Past negative (nakatta)公開しなかった(こうかいしなかった)
polite (masen deshita)公開しませんでした(こうかいしませんでした)
Te form公開して(こうかいして)
Potential公開できる(こうかいできる)
Passive公開される(こうかいされる)
Causative公開させる(こうかいさせる)
Causative passive公開させられる(こうかいさせられる)
Conditional (ba)公開すれば(こうかいすれば)
tara公開したら(こうかいしたら)
Volitional公開しよう(こうかいしよう)
polite (mashou)公開しましょう(こうかいしましょう)
Imperative公開しろ(こうかいしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym開示かいじWrittenWritten/formal prose: disclosing information, as in 「情報開示」; typically releasing documents on request, while 「公開」 leans toward opening things to the general public.
  • SynonymディスクロージャーWrittenWritten/formal prose loanword: companies disclosing business information, or governments releasing official documents; heard mostly in finance and accounting.
  • Synonym明らかにするあきらかにするNeutralNeutral: making something clear, as in 「真相を明らかにする」; it can also mean revealing what was hidden, but the emphasis is on bringing the facts to light.
  • Related暴露ばくろWrittenWritten/formal prose: exposing secrets or scandals, or airing one's own, as in 「秘密を暴露する」; carries a nuance of revealing embarrassing things.
  • Antonym非公開ひこうかいNeutralNeutral antonym: not open to the public, the direct opposite of 「公開」, as in 「非公開会議」.
  • Antonym秘密ひみつNeutralNeutral antonym: a secret, something kept hidden from others — the opposite of making things public with 「公開」.

Use 「公開」 for opening things to the public or releasing films and information, as in 「映画公開」 and 「一般公開」. For disclosing documents say 「開示」, for exposing scandals 「暴露」; the opposites are 「非公開」 and 「秘密」.

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

Japanese definitions
  1. 自由じゆうに見みたり聞きいたりできるように公おおやけに開放かいほうすること。
  2. 映画えいがなどの上映じょうえいを開始かいしすること。
Kanji in this word
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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