弱体|じゃくたいjakutai[0]heiban (flat)

1. nounweak constitution; weak body
2. na-adjective, nounweak (organization, system, etc.); feeble

• Synonym軟弱なんじゃくWrittenWritten/formal prose: soft ground or a weak body or attitude, as in 「軟弱地盤」; 「弱体」 usually speaks of weak organizational strength.
• Synonym柔弱にゅうじゃくWrittenWritten/formal prose: softness and lack of backbone; 「弱体」 is about weak physical or organizational strength.
• Synonym弱さよわさNeutralThe broadest word for weakness or a weak point; 「弱体」 is limited to weak body or organization and often appears as 「弱体化」.
• Synonymひ弱さNeutralFrail, delicate look, mostly of physique or constitution; 「弱体」 can also describe the body but more often a weak organization or system.
• Synonym柔弱さNeutralThe degree of being soft and feeble; 「弱体」 refers to weak physical or organizational strength.
• Synonym薄弱さWrittenWritten/formal prose: weakness of will, grounds, etc., as in 「根拠の薄弱さ」; 「弱体」 is about weak physical or organizational strength.
• Synonym軟弱さNeutralThe degree of being weak and feeble; 「弱体」 refers to weak physical or organizational strength.
• Synonymか弱さNeutralDainty frailty that invites sympathy, mostly of women, as in 「か弱い女性」; 「弱体」 carries no such tender nuance.
• Related弱気よわきNeutralTimidity or pessimism, or a bearish market, as in 「弱気になる」; 「弱体」 is about weak strength, not states of mind.
• Related懦弱さWrittenWritten/formal prose: a cowardly, timid character; 「弱体」 refers to weak physical or organizational strength.
• Antonym強固きょうこWrittenWritten/formal prose: firm and solid, as in 「強固な意志」; the opposite of 「弱体」 in terms of strength.
• Antonym強力きょうりょくNeutralPowerful and strong, as in 「強力な体制」; the opposite of 「弱体」 in terms of strength.

Use 「弱体」 for weak physical strength or a weak organization, as in 「弱体な政権」; weakening is expressed as 「弱体化」. For weakness in general pick 「弱さ」, for timidity 「弱気」; the opposites are 「強固」 and 「強力」.

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

1. 体からだが弱よわくなること。
2. 組織そしきが弱よわくなること。