同盟|どうめいdoumei[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. noun, suru verb, intransitive verballiance; union; league
    Japan entered into an alliance with France just before the war.
Conjugation
Dictionary form同盟する(どうめいする)
Polite (masu)同盟します(どうめいします)
Negative (nai)同盟しない(どうめいしない)
polite (masen)同盟しません(どうめいしません)
classical zu / nu同盟せず・同盟せぬ(どうめいせず・どうめいせぬ)
Past (ta)同盟した(どうめいした)
polite (mashita)同盟しました(どうめいしました)
Past negative (nakatta)同盟しなかった(どうめいしなかった)
polite (masen deshita)同盟しませんでした(どうめいしませんでした)
Te form同盟して(どうめいして)
Potential同盟できる(どうめいできる)
Passive同盟される(どうめいされる)
Causative同盟させる(どうめいさせる)
Causative passive同盟させられる(どうめいさせられる)
Conditional (ba)同盟すれば(どうめいすれば)
tara同盟したら(どうめいしたら)
Volitional同盟しよう(どうめいしよう)
polite (mashou)同盟しましょう(どうめいしましょう)
Imperative同盟しろ(どうめいしろ)

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

Synonyms & antonyms
  • Synonym連合れんごうNeutralBroad term for a union or combination of groups, as in 「国際連合」; unlike 「同盟」, it does not stress a pact binding the members together.
  • Synonym連盟れんめいNeutralA federation or league formed by associations and organizations, as in 「日本陸上競技連盟」.
  • SynonymユニオンNeutralLoanword meaning union or labor union; mostly appears in the names of organizations.
  • Synonym連立れんりつNeutralA coalition, mainly of political parties, as in 「連立政権」; also used in math for 「連立方程式」. 「同盟」 stresses a concluded pact.
  • SynonymアライアンスNeutralLoanword for a strategic alliance between companies; carries a distinctly business flavor.
  • Related提携ていけいWrittenA business partnership or tie-up, as in 「業務提携」; looser than 「同盟」. Written/formal prose.
  • Related団結だんけつNeutralUnity or solidarity; stresses spiritual togetherness and does not necessarily involve a pact, unlike 「同盟」.
  • Related合従連衡がっしょうれんこうWrittenFour-character idiom for making and breaking alliances as the moment demands; also a metaphor for corporate mergers and splits. Written/formal prose.
  • Related合従がっしょうWrittenHistorical term for the alliance of the six Warring States against Qin; used in historical contexts. Written/formal prose.
  • Antonym敵対てきたいWrittenAntonym: treating the other side as an enemy and opposing it; the opposite of 「同盟」. Written/formal prose.
  • Antonym反目はんもくWrittenAntonym: parties being at odds and hostile toward each other; the opposite of forming an alliance. Written/formal prose.
  • Antonym離反りはんWrittenAntonym: followers or members turning away and breaking off, as in 「人心の離反」; the opposite of staying allied. Written/formal prose.

Use 「同盟」 for a pact-based alliance of nations or groups, as in 「軍事同盟」. For a broader union or bloc pick 「連合」, for a federation of associations 「連盟」, for business tie-ups 「提携」, and for solidarity 「団結」; the opposite is 「敵対」.

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

Japanese definitions
  1. 1.により組織そしきを結成けっせいすること。またその組織そしき。
Kanji in this word
English equivalents
See also

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

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