Definitions

1. noun

relating to or characteristic of the period of life between 60 and 69 years of age

“As a sexagenarian, he had gained a wealth of experience and wisdom.”

2. adjective

relating to or characteristic of the period of life between 60 and 69 years of age

“The sexagenarian author wrote a bestselling novel about her life experiences.”

3. adverb

in the period of life between 60 and 69 years of age

“She worked hard as a sexagenarian, still enjoying her career.”