How to say "secession" in Japanese

• 離脱りだつCommon
  noun, suru verb, intransitive verbCovers secession in the sense of a breakaway or pulling away from a group or bloc, often with an image of sudden separation. Typical of political factions, alliances, or unions splitting off.
  国民こくみん党とうは、簡潔かんけつに言ゆうと、政治せいじが崩壊ほうかいする前まえに政府せいふを離脱りだつする必要ひつようがあった。↗

  The People's party, to put it briefly, needed to leave the government before the government fell.
• 脱退だったいJLPT N1approx.Common
  noun, suru verb, intransitive verbUsed for secession as formal withdrawal from an organization one belongs to, such as leaving a federation or alliance. It suggests an orderly act of quitting membership rather than a dramatic split.
  君きみは直ただちにクラブを脱退だったいしたほうがよい。↗

  You may as well withdraw from the club right away.
• 退会たいかいCommon
  noun, suru verb, intransitive verbRestricted to secession in the everyday sense of resigning from a society, club, or similar body, or unsubscribing from a mailing list. It is not the word for political secession; it really means cancelling one's membership.

Use 離脱 for a breakaway or separation from a group, 脱退 for formal withdrawal from an organization, and 退会 only for resigning membership in a club, society, or mailing list.

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

• 離脱りだつwithdrawal
• 脱退だったいwithdrawal (e.g. from an organization)
• 退会たいかいwithdrawal (from a society, club, etc.)
• ゼツェッションsecession (esp. in art, architecture, etc.)
• セセッションsecession (esp. in art, architecture, etc.)