| barer | |
| basis(noun, cause, top, opening, source) | |
| batsman | |
| birth(noun, start, top, beginning, opening) | |
| blast off(noun, expression, cause, beginning, birth) | |
| bloomer | |
| blunter | |
| bolder | |
| bow(noun, appearance, start, beginning, onset) | |
| broacher | |
| church key | |
| clavis | |
| commencement(noun, top, beginning, opening, creation) | |
| commencer | |
| committer | |
| consecrator | |
| contributor | |
| countdown(noun, start, approach, beginning, onset) | |
| creation(noun, cause, top, beginning, opening) | |
| curtain-raiser(noun, start, beginning, opening, fling) |
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| APA | Smart Define. (2015). opener thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/opener/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "opener thesaurus" https://smartdefine.org/opener/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, opener thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/opener/thesaurus/synonyms>. |
| MLA | Smart Define. "opener thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/opener/thesaurus/synonyms> |