noun
weak constitution; weak body
Refers to a person's physical frailty or poor health. Often used in medical or descriptive contexts.
彼は生まれつき弱体で、よく病気になる。
He has been physically weak since birth and often gets sick.
na-adjective, noun
Describes an organization, system, or structure that is fragile, ineffective, or lacking strength. Common in news and analytical writing.
その会社は管理体制が弱体で、すぐに倒産した。
The company had a weak management system and quickly went bankrupt.
弱体な組織では、大きな変化に対応できない。
A feeble organization cannot adapt to major changes.