Synonyms|347Antonyms|17|Broader|6Narrower|0Related|41
1
invariable(calm, strong, solid, steady, substantial)
1
inwrought
1
irreversible
1
knee-deep
1
latent
1
lengthy
1
lifelong(adjective, fixed, persistent, hardened, lasting)
1
lingering(adjective, fixed, persistent, lasting, remaining)
1
long
1
long-drawn-out
1
long-established
1
long-lasting(hardened, permanent, confirmed, chronic, long-term)
1
long-range
1
long-standing(complete, true, steady, fixed, even)
1
long haul
1
longstanding(permanent, innate, inherent, long-term, lifelong)
1
nailed(calm, strong, solid, steady, substantial)
1
obstinate(persistent, continuous, hardened, lasting, continuing)
1
old(hardened, permanent, confirmed, chronic, long-term)
1
old-line
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APASmart Define. (2016). deep-rooted thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/deep-rooted/thesaurus/synonyms
ChicagoSmart Define. 2016. "deep-rooted thesaurus" https://smartdefine.org/deep-rooted/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, deep-rooted thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/deep-rooted/thesaurus/synonyms>.
MLASmart Define. "deep-rooted thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/deep-rooted/thesaurus/synonyms>