infirmities of old age; senility
Refers to the physical and mental decline associated with advanced age. Often used in formal or literary contexts.
Due to the infirmities of old age, going out has become difficult.
Obsolete term; the modern equivalent is 老若 (ろうにゃく). This sense is no longer in active use.
See also: 老若
In old documents, 老弱 is sometimes used with the same meaning as 老若.