71 entries under substantial topic. ×
| petrified(strong, secure, stable, unmoving) | |
| riveted(strong, secure, stable, unmoving) | |
| screwed(strong, secure, stable, unmoving) | |
| secured(strong, secure, stable, unmoving) | |
| soldered(strong, secure, stable, unmoving) | |
| spiked(strong, secure, stable, unmoving) | |
| taut(strong, secure, stable, unmoving) | |
| tightened(strong, secure, stable, unmoving) | |
| unmoving(strong, secure, stable) | |
| unshakable(strong, secure, determined, stable) | |
| welded(strong, secure, stable, unmoving) |
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| APA | Smart Define. (2016). robust thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/robust/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "robust thesaurus" https://smartdefine.org/robust/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, robust thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/robust/thesaurus/synonyms>. |
| MLA | Smart Define. "robust thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/robust/thesaurus/synonyms> |