1
old man
1
old poop
1
old woman
1
olden(tired, gray, mature, early, antique)
1
older(adjective, old, venerable, early, antique)
1
oldie(noun, adjective, old, venerable, early)
1
oldish(tired, gray, mature, aged, older)
1
orts
1
out of date(expression, idiom)
1
outmoded
1
over the hill(expression, tired, gray, mature, aged)
1
paring
1
parings
1
patriarch
1
pebble
1
petrified forest
1
petrified wood
1
petroglyph
1
plateaulith
1
pop
11 years ago|6k views|share |citing 
APASmart Define. (2015). fossil thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fossil/thesaurus/synonyms
ChicagoSmart Define. 2015. "fossil thesaurus" https://smartdefine.org/fossil/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, fossil thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fossil/thesaurus/synonyms>.
MLASmart Define. "fossil thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/fossil/thesaurus/synonyms>