おろく

nidan verb (lower class) with 'ku' ending (archaic), intransitive verb

become absent-minded; grow senile

Archaic intransitive verb. Describes mental decline or dotage in older Japanese texts. Not used in modern speech.

• 古こ典てんでは、年とし老おいておろく様よう子すが描えがかれることがある。

  In classical literature, the state of growing senile with age is sometimes depicted.