9
grow(verb, develop, raise, produce, progress)
9
old age(noun, expression, idiom, decline, period)
9
years
8
century(noun, time, period, day, year)
7
blue moon(noun, expression, idiom, time, informal)
7
cycle(noun, time, set, period, stage)
7
span(noun, time, present, turn, point)
6
deteriorate(verb, state, older)
6
elderliness(noun, period, maturity, infirmity, feebleness)
6
get on(verb, expression, phrasal verb, grow, youth)
6
grow old(verb, expression, idiom, develop, mature)
6
life(noun, time, present, turn, point)
6
long time(noun, expression, idiom)
5
ancientness(noun, oldness)
5
days
5
eld
5
get along(verb, expression, phrasal verb, grow, youth)
5
grow up(verb, expression, phrasal verb, develop, progress)
5
hour(noun, time, present, turn, point)
5
lastingness
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APASmart Define. (2016). age thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/age/thesaurus/synonyms
ChicagoSmart Define. 2016. "age thesaurus" https://smartdefine.org/age/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, age thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/age/thesaurus/synonyms>.
MLASmart Define. "age thesaurus" 2 March 2016. Web. 23 September 2026. <https://smartdefine.org/age/thesaurus/synonyms>