Synonyms|141Antonyms|73|Broader|1Narrower|0Related|600
2
steady
2
unceasing(steady, constant, continuous, lasting, permanent)
2
uninterrupted
2
without end(expression, lasting, permanent, everlasting, unending)
1
abiding(lasting, permanent, everlasting, unending, undying)
1
aeonian
1
aged
1
antediluvian
1
around-the-clock
1
auld
1
coeternal
1
confirmed
1
connected
1
consecutive
1
continued(lasting, permanent, everlasting, unending, undying)
1
deep
1
deep-rooted
1
deep-seated
1
deep in thought
1
elderly
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APASmart Define. (2016). dateless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/dateless/thesaurus/synonyms
ChicagoSmart Define. 2016. "dateless thesaurus" https://smartdefine.org/dateless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, dateless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/dateless/thesaurus/synonyms>.
MLASmart Define. "dateless thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/dateless/thesaurus/synonyms>