Synonyms|141Antonyms|73|Broader|1Narrower|0Related|600
1
lengthy
1
long
1
long-drawn-out
1
long-lived
1
long-range
1
long-term
1
long haul
1
never-ceasing
1
non-stop
1
nonterminating
1
nonterminous
1
of old
1
of yore
1
oft-repeated
1
olamic
1
old-time
1
old as history(expression, idiom)
1
old as time(expression, idiom)
1
olden
1
ongoing
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APASmart Define. (2016). dateless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/dateless/thesaurus/synonyms
ChicagoSmart Define. 2016. "dateless thesaurus" https://smartdefine.org/dateless/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, dateless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/dateless/thesaurus/synonyms>.
MLASmart Define. "dateless thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/dateless/thesaurus/synonyms>