A weak physical constitution; having low strength or resistance to illness.
彼女は子どものころから弱体で、季節の変わり目にはよく風邪をひく。
She has had a weak constitution since childhood and often catches colds when the seasons change.
長年の過労で体が弱体になり、入院することになった。
Years of overwork weakened his body, and he had to be hospitalized.
医師は弱体の改善のために栄養と休養を勧めた。
The doctor recommended nutrition and rest to improve his weak constitution.
Weakness of an organization, system, or function; feebleness or lack of effectiveness.
あの会社は最近の競争に対応できず弱体ぶりが目立っている。
That company has been noticeably weak in responding to recent competition.
組織の弱体化を防ぐために、改革が必要だ。
Reforms are necessary to prevent the weakening of the organization.
政策の一貫性の欠如が政府の弱体を招いた。
The lack of policy consistency led to weakness in the government.