34 entries under substantial topic. ×

14
fastened(verb, adjective, strong, secure, firm)
9
fast(adjective, strong, secure, stable)
6
bolted(verb, adjective, strong, secure)
5
closed(verb, adjective, strong, secure)
5
secure(adjective, strong, stable, unmoving)
4
tight(adjective, strong, secure, stable)
3
tightened(verb, strong, secure, stable)
2
anchored(verb, strong, secure, stable)
2
immobile(adjective, strong, secure, stable)
2
nailed(verb, strong, secure, stable)
2
settled(strong, secure, stable, unmoving)
1
riveted(adjective, strong, secure, firm)
1
strong(secure, stable, unmoving, guarded)
0
braced(strong, secure, stable, unmoving)
0
cemented(strong, secure, stable, unmoving)
0
durable(strong, secure, stable, unmoving)
0
embedded(strong, secure, stable, unmoving)
0
immovable(strong, secure, stable, unmoving)
0
motionless(strong, secure, stable, unmoving)
0
mounted(strong, secure, stable, unmoving)
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APASmart Define. (2016). secured thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/secured/thesaurus/synonyms
ChicagoSmart Define. 2016. "secured thesaurus" https://smartdefine.org/secured/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, secured thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/secured/thesaurus/synonyms>.
MLASmart Define. "secured thesaurus" 11 February 2016. Web. 23 September 2026. <https://smartdefine.org/secured/thesaurus/synonyms>