交信|こうしんkoushin[0]heiban (flat)

Common
Definitions
  1. noun, suru verb, intransitive verbtelecommunications; correspondence
    交信こうしんが出来できません。↗
    I just can't seem to make contact.
Conjugation
Dictionary form交信する(こうしんする)
Polite (masu)交信します(こうしんします)
Negative (nai)交信しない(こうしんしない)
polite (masen)交信しません(こうしんしません)
classical zu / nu交信せず・交信せぬ(こうしんせず・こうしんせぬ)
Past (ta)交信した(こうしんした)
polite (mashita)交信しました(こうしんしました)
Past negative (nakatta)交信しなかった(こうしんしなかった)
polite (masen deshita)交信しませんでした(こうしんしませんでした)
Te form交信して(こうしんして)
Potential交信できる(こうしんできる)
Passive交信される(こうしんされる)
Causative交信させる(こうしんさせる)
Causative passive交信させられる(こうしんさせられる)
Conditional (ba)交信すれば(こうしんすれば)
tara交信したら(こうしんしたら)
Volitional交信しよう(こうしんしよう)
polite (mashou)交信しましょう(こうしんしましょう)
Imperative交信しろ(こうしんしろ)

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

Synonyms & antonyms
  • Synonym通信つうしんNeutralThe broadest term for communication, covering postal and telecom services; 「交信」 is narrower, for two-way exchange of signals by radio or satellite.
  • Related音信おんしんWrittenWritten-style word for news or word from someone, focusing on whether contact exists; most often seen in 「音信不通」.
  • Related文通ぶんつうNeutralExchanging letters, typically with a pen pal; centers on personal letter writing rather than radio contact.
  • RelatedコレスポンデンスNeutralLoanword for correspondence — exchanging letters or business mail; rare in everyday use.
  • Relatedメール交換メールこうかんNeutralA descriptive phrase for exchanging emails; centers on mail exchanges, not radio or satellite contact.
  • Antonym不通ふつうNeutralThe opposite of 「交信」: communications are cut off or suspended, with no contact possible.

Use 「交信」 for two-way contact by radio, satellite or similar, as in 「宇宙飛行士と交信する」. For communication in general say 「通信」, for pen-pal letters 「文通」, for news from someone 「音信」; the opposite is 「不通」.

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

Japanese definitions
  1. お互たがいに通信つうしんをかわすこと。
Kanji in this word
English equivalents

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