How to say "solidarity" in Japanese

• 連帯れんたいJLPT N1approx.Common
  noun, suru verb, intransitive verbThe closest match for solidarity as standing together for a shared cause; it stresses mutual bonds and support, as in political or labor movements rallying behind common demands.
• 団結だんけつJLPT N1approx.Common
  noun, suru verb, intransitive verbCovers solidarity in the sense of a group uniting into one body; it emphasizes members binding together and acting as one, as when workers or team members close ranks.
  ２つのグループが団結だんけつして１つの政党せいとうになった。↗

  Two groups united to form a party.
• 結束けっそくJLPT N1approx.Common
  noun, suru verb, transitive verb, intransitive verbAlso about a group's unity, but with the nuance of close-knit cohesion, the bonds holding members together; typical in talk of strengthening the solidarity of a team or organization.
• 一枚岩いちまいいわCommon
  nounLiterally 'one slab of rock,' it describes a group that is completely unified, with no internal rifts; for simply expressing solidarity it is seldom the word you want, being really a picture of unanimity.

Use 連帯 for solidarity as mutual support around a shared cause, 団結 or 結束 for a group's unity and cohesion, and 一枚岩 for a group that is rock-solid unified rather than for solidarity itself.

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

• 連帯れんたいsolidarity
• 団結だんけつunity
• 結束けっそくunion
• 一致団結いっちだんけつsolidarity
• ソリダリティーsolidarity
• 共同責任きょうどうせきにんjoint responsibility
• 一致協力いっちきょうりょくcombined (concerted) efforts
• 協心戮力きょうしんりくりょくcombined (concerted) efforts
• 協力一致きょうりょくいっちcombined (concerted) efforts
• 戮力協心りくりょくきょうしんcombined (concerted) efforts
• 団結力だんけつりょくunity
• 一枚岩いちまいいわunity (of a group, organization, etc.)
• たがdiscipline