| unused(adjective, spare, extra, replacement) | |
| vicar(supply, agent, replacement, alternative, alternate) | |
| votary | |
| waiting list(noun, expression, list) | |
| walk-on | |
| walk on | |
| walking gentleman | |
| abnormal | |
| abundantly | |
| acting(extra, auxiliary, supernumerary) | |
| actor | |
| adjuvant(reserve, subsidiary, supportive) | |
| aerial | |
| airfare | |
| airline | |
| airlink | |
| alert status(expression, idiom) | |
| alternative(extra, replacement, alternate, auxiliary, supernumerary) | |
| anomalous | |
| another(extra, auxiliary, supernumerary) |
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| APA | Smart Define. (2015). standby thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/standby/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "standby thesaurus" https://smartdefine.org/standby/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, standby thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/standby/thesaurus/synonyms>. |
| MLA | Smart Define. "standby thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/standby/thesaurus/synonyms> |