156 entries under strong topic. ×

19
adamant(adjective, mean, hard, secure)
19
stable(adjective, adverb, calm, quiet)
18
definite(adjective, set, clear, complete)
18
enduring(adjective, sound, tough, flat)
18
rooted(verb, adjective, hard, secure)
18
steady(adjective, adverb, move, sound)
16
persistent(adjective, tough, flat, firm)
16
unalterable(adjective, hard, secure, severe)
15
secure(adjective, hard, sound, tough)
14
lasting(adjective, tough, firm, stable)
14
resolved(verb, adjective, set, flat)
13
solid(adjective, set, hard, sound)
12
motionless(adjective, calm, quiet, secure)
12
sure(adjective, clear, flat, firm)
12
tight(adjective, adverb, close, hard)
12
unmoving(adjective, move, calm, secure)
11
fastened(noun, verb, adjective, sound)
11
flat(adjective, change, definite, absolute)
11
tenacious(adjective, sound, secure, tough)
10
abiding(adjective, tough, flat, firm)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 22 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>