32 entries under opening topic. ×
| inception(noun, start, top, beginning) | |
| kickoff(noun, start, top, beginning) | |
| onset(noun, start, top, beginning) | |
| origination(noun, top, beginning, creation) | |
| outset(noun, top, beginning, creation) | |
| passe-partout | |
| rise(noun, top, beginning, creation) | |
| root(noun, cause, top, source) | |
| source(noun, cause, top, creation) | |
| spring(noun, cause, top, creation) | |
| square one(noun, expression, top, beginning) | |
| activation(noun, start, launch, establishment) |
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| APA | Smart Define. (2015). opener thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/opener/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "opener thesaurus" https://smartdefine.org/opener/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, opener thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/opener/thesaurus/synonyms>. |
| MLA | Smart Define. "opener thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/opener/thesaurus/synonyms> |