耄 (w)

(mào) extremely aged (in one's 80s or 90s); octogenarian; nonagenarian

耄倪 (w)

(màoní) old and young

耄思 (w)

(màosī) to be upset or disturbed

耄期 (w)

(màoqī) to have reached the age of eighty or ninety

耄耋 (w)

(màodié) extremely aged; gray and venerable

耄耋之年 (w)

(màodiézhīnián) old age (in one's 80s, 90s, or more)

耄龄 (w)

(màolíng) old age; eighties, nineties, or greater (of age)