108 entries under substantial topic. ×
| large(adjective, great, big, significant) | |
| ample(adjective, open, great, complete, top) | |
| great(adjective, strong, intense, big, powerful) | |
| spacious(adjective, clear, open, great, free) | |
| big(adjective, great, big, significant) | |
| roomy(adjective, great, space, large) | |
| far-reaching(adjective, open, great, complete, spread) | |
| voluminous(adjective, great, big, large) | |
| capacious(adjective, great, big, space) | |
| huge(adjective, great, big, large) | |
| massive(adjective, great, big, large) | |
| full(adjective, open, great, complete, top) | |
| copious(adjective, great, top, big) | |
| all-encompassing(adjective, complete, total, big) | |
| considerable(adjective, great, big, significant) | |
| sizable(adjective, open, great, big) | |
| commodious(adjective, open, great, large) | |
| prodigious(adjective, strong, great, fancy, big) | |
| major(adjective, big, large, grand) | |
| hefty(adjective, great, big, large) |
For more, visit
Extensive on
Power Thesaurus
| APA | Smart Define. (2016). extensive thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extensive/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "extensive thesaurus" https://smartdefine.org/extensive/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, extensive thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extensive/thesaurus/synonyms>. |
| MLA | Smart Define. "extensive thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/extensive/thesaurus/synonyms> |