老ろう耄もう

noun, noun or participle which takes 'suru', intransitive verb

senility; dotage; decrepitude

Formal or literary term for the state of mental and physical decline in old age. Often used in medical or descriptive contexts. Compare with 耄碌 (もうろく), which is more common and colloquial.

See also: 耄碌

• 老ろう耄もうが進すすみ、日にち常じょう生せい活かつに支し障しょうが出でてきた。

  His senility progressed and began to interfere with daily life.

• 祖そ父ふは老ろう耄もうして、家か族ぞくの顔かおもわからなくなった。

  My grandfather became senile and could no longer recognize his family's faces.