Noun
(euphemistic) An old person.
Synonyms: senior citizen, senior, elderly person; see also Thesaurus:old person
Used other than figuratively or idiomatically: see older, adult.
Source: en.wiktionary.orgJurek had a feature rarely seen in an older adult – an unrestrained, almost childish curiosity of the world that fueled his activity in everyday life and did not allow him to age mentally. He liked to be on the move all the time, to go on trips, so as not to sit idle. Jerzy Vetulani