215 entries under adjective topic. ×

71
persistent(strong, tough, continue, strain)
66
stable(strong, secure, tough, strain)
61
lasting(calm, strong, secure, tough)
52
everlasting(strong, steady, stable, fixed)
50
firm(calm, strong, secure, tough)
48
enduring(calm, strong, secure, tough)
47
constant(calm, strong, secure, tough)
47
perpetual(strain, usual, steady, stable)
42
strong(strain, firmness, labour, hardiness)
40
durable(time, continue, strain, stable)
40
sound(strain, firmness, labour, hardiness)
39
consistent(strain, usual, steady, stable)
38
eternal(pause, steady, fixed, persistent)
38
unfluctuating(calm, strong, secure, strain)
37
fixed(verb, strong, secure, tough)
36
stiff(strain, firmness, labour, hardiness)
34
invariable(calm, strong, secure, strain)
34
steadfast(calm, strong, secure, strain)
33
unalterable(calm, strong, secure, strain)
31
stationary(moving, strain, fixed, firmness)
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APASmart Define. (2016). permanent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/permanent/thesaurus/synonyms
ChicagoSmart Define. 2016. "permanent thesaurus" https://smartdefine.org/permanent/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, permanent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/permanent/thesaurus/synonyms>.
MLASmart Define. "permanent thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/permanent/thesaurus/synonyms>