老耄

lǎomào
  1. dim sight of the aged
  2. doddering
  3. senile

CEDICT

senile; decrepit

Wiktionary

語本《禮記．曲禮上》：「七十曰老而傳，八十、九十曰耄。」指年紀很大。《國語．楚語上》：「女無亦謂我老耄而舍我，而又謗我。」也作「老眊」、「老旄」。

重編國語辭典

年紀很大

維基詞典

Entry Composition

1 老 lǎo
  1. prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity
  2. old (of people)
  3. venerable (person)
  4. experienced
  5. of long standing
  6. always
  7. all the time
  8. of the past
  9. very
  10. outdated
  11. (of meat etc) tough
2 耄 mào
  1. extremely aged (in one's 80s or 90s)
  2. octogenarian
  3. nonagenarian

Related entries

老態 lǎotài
  1. old and frail
  2. decrepit
  3. doddering
  4. decrepitude
  5. infirmities of old age
惛耄 hūnmào
  1. senile
  2. senility
頹老 tuílǎo
  1. old and decrepit
  2. senile
龍鍾 lóngzhōng
  1. decrepit
  2. senile