110 entries under adjective topic. ×

3
ancient(dead, past, lost, previous)
3
antediluvian
3
dated(dead, past, lost, previous)
3
erstwhile(dead, past, lost, previous)
3
gone by(verb, expression, phrasal verb, dead)
2
blanked out
2
bleak
2
buried
2
dead(past, lost, previous, former)
2
defunct(dead, past, lost, previous)
2
departed(dead, past, lost, previous)
2
deserted
2
dismal
2
disoriented
2
disremembered
2
down memory lane(expression, idiom, dead, past)
2
dreary
2
drew a blank
2
fell between the cracks
2
miserable
10 years ago|13k views|share |citing 
APASmart Define. (2015). forgotten thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/forgotten/thesaurus/synonyms
ChicagoSmart Define. 2015. "forgotten thesaurus" https://smartdefine.org/forgotten/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, forgotten thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/forgotten/thesaurus/synonyms>.
MLASmart Define. "forgotten thesaurus" 30 October 2015. Web. 24 September 2026. <https://smartdefine.org/forgotten/thesaurus/synonyms>