40 entries under secure topic. ×
| fastened(verb, adjective, strong, solid) | |
| locked(verb, adjective, protected, shut) | |
| tight(strong, substantial, stable, unmoving) | |
| secured(verb, adjective, strong, substantial) | |
| bolted(verb, adjective, strong, substantial) | |
| firm(adjective, strong, stable, unmoving) | |
| fixed(verb, adjective, calm, quiet, strong) | |
| anchored(strong, substantial, stable, unmoving) | |
| cemented(adjective, strong, substantial, stable) | |
| fast(strong, substantial, stable, unmoving) | |
| strong(substantial, stable, unmoving) | |
| tightened(strong, substantial, stable, unmoving) | |
| welded(adjective, strong, substantial, stable) | |
| immobile(adjective, strong, solid, steady) | |
| immovable(strong, substantial, stable, unmoving) | |
| motionless(adjective, calm, quiet, strong) | |
| sound(strong, substantial, stable, unmoving) | |
| stable(adjective, calm, quiet, strong) | |
| stationary(adjective, calm, quiet, strong) | |
| steady(adjective, strong, solid, substantial) |
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| APA | Smart Define. (2016). closed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/closed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "closed thesaurus" https://smartdefine.org/closed/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, closed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/closed/thesaurus/synonyms>. |
| MLA | Smart Define. "closed thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/closed/thesaurus/synonyms> |