遮断|しゃだんshadan[0]heiban (flat)

Common
Definitions
  1. noun, suru verb, transitive verbisolation; cut off; blockade; quarantine; interception; deprivation
    がけくずれで交通こうつうは遮断しゃだんされた。↗
    Traffic was blocked by a landslide.
Conjugation
Dictionary form遮断する(しゃだんする)
Polite (masu)遮断します(しゃだんします)
Negative (nai)遮断しない(しゃだんしない)
polite (masen)遮断しません(しゃだんしません)
classical zu / nu遮断せず・遮断せぬ(しゃだんせず・しゃだんせぬ)
Past (ta)遮断した(しゃだんした)
polite (mashita)遮断しました(しゃだんしました)
Past negative (nakatta)遮断しなかった(しゃだんしなかった)
polite (masen deshita)遮断しませんでした(しゃだんしませんでした)
Te form遮断して(しゃだんして)
Potential遮断できる(しゃだんできる)
Passive遮断される(しゃだんされる)
Causative遮断させる(しゃだんさせる)
Causative passive遮断させられる(しゃだんさせられる)
Conditional (ba)遮断すれば(しゃだんすれば)
tara遮断したら(しゃだんしたら)
Volitional遮断しよう(しゃだんしよう)
polite (mashou)遮断しましょう(しゃだんしましょう)
Imperative遮断しろ(しゃだんしろ)

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

Synonyms & antonyms
  • Synonym遮るさえぎるNeutralA verb for blocking or interrupting, as in 「話を遮る」「光を遮る」; a native Japanese word with broad uses, while 「遮断」 leans toward cutting off a flow.
  • Synonym封鎖ふうさNeutralBlockading roads, ports and the like, as in 「道路封鎖」; stresses closing something off by force.
  • SynonymシャットアウトNeutralA loanword for shutting someone or something out, or a scoreless shutout; stresses complete isolation.
  • Synonym閉塞へいそくNeutralBeing blocked up with no way through, as in 「腸閉塞」「閉塞感」; stresses the blocked-up state.
  • Synonym断つたつNeutralA verb for severing or cutting things off, as in 「消息を絶つ」; stresses a complete break.
  • Related阻むはばむNeutralA verb for blocking someone's advance, as in 「行く手を阻む」; stresses stopping the other party.
  • Related断ち切るたちきるNeutralA verb for severing ties or breaking a vicious cycle, also cutting transport networks; 「遮断」 focuses on cutting off a flow.
  • Related締め出すしめだすNeutralShutting the door to keep someone out, or excluding them from a group; stresses exclusion.
  • Related阻害そがいNeutralHindering or obstructing development, as in 「成長を阻害」; stresses causing harm or damage.
  • Related妨害ぼうがいNeutralInterfering with or disrupting something, as in 「営業妨害」「睡眠を妨害する」; 「遮断」 is about cutting a flow off.
  • Related打ち切るうちきるNeutralDiscontinuing something partway through, as in 「交渉を打ち切る」; stresses ending it, not cutting off a flow.
  • Related封じるふうじるNeutralA verb for sealing something shut or blocking movement; stresses making action impossible.
  • Related閉鎖へいさNeutralClosing a facility or shutting down operations, as in 「工場閉鎖」; stresses closing up and ceasing use.
  • Related完封かんぷうNeutralCompletely blocking someone's movements, also a shutout in baseball; stresses total suppression.
  • Related邪魔じゃまCasualBeing in the way or a nuisance, also said when visiting as in 「お邪魔します」; colloquial and very common.
  • Related閉ざすとざすNeutralA verb for shutting gates or closing off one's heart, as in 「心を閉ざす」; stresses shutting something in.
  • Related阻止そしNeutralPreventing an act from happening, as in 「侵入を阻止」; stresses stopping it.
  • Related立ちふさがるたちふさがるNeutralStanding in the way and blocking someone's path; stresses a person or obstacle physically barring the way.
  • Related邪魔立てじゃまだてCasualDeliberately getting in someone's way to obstruct them; colloquial and derogatory.
  • Related封ずるふうずるWrittenA literary form of 「封じる」 with the same meaning; used in written/formal prose.
  • Antonym開放かいほうNeutralThe antonym: opening up or leaving open; the opposite of cutting off with 「遮断」.

Use 「遮断」 for cutting off the flow of traffic, electricity, signals or light, as in 「踏切の遮断機」「電源を遮断」. For simply blocking or interrupting, say 「遮る」; for blockading, 「封鎖」; for interfering, 「妨害」. The antonym is 「開放」. Among the rest, 「阻む」 stops an advance, 「断ち切る」 and 「断つ」 sever ties, 「閉ざす」 and 「閉鎖」 close things up, and 「邪魔」 is the everyday word for getting in the way.

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

Japanese definitions
  1. 交通こうつうや電気でんき、通信つうしんなどの流ながれを遮り止さえぎりとめること。
Kanji in this word
English equivalents
See also

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