mào dié
extremely aged
gray and venerable
mào
extremely aged (in one's 80s or 90s)
octogenarian
nonagenarian
mào dié zhī nián
old age (in one's 80s, 90s, or more)
lǎo mào
dim sight of the aged
doddering
senile
mào qī
to have reached the age of eighty or ninety
mào líng
old age
eighties, nineties, or greater (of age)