- Definitions|1
- Thesaurus|344
- Abbreviations|0
18 entries under noun topic. ×
| breakthrough(momentous, milestone, landmark) | |
| cause | |
| ceremony | |
| chance | |
| chasm | |
| commencement | |
| crack | |
| door | |
| entrance | |
| establishment | |
| facility | |
| gap | |
| hole | |
| induction | |
| mouth | |
| occasion | |
| onset | |
| opening |
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| APA | Smart Define. (2015). groundbreaking thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/groundbreaking/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "groundbreaking thesaurus" https://smartdefine.org/groundbreaking/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, groundbreaking thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/groundbreaking/thesaurus/synonyms>. |
| MLA | Smart Define. "groundbreaking thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/groundbreaking/thesaurus/synonyms> |