| lucky(adjective, happy, uncertain, chance, casual) | |
| odd(adjective, chance, surprise, secondary, various) | |
| secondary | |
| serendipitous(adjective, chance, lucky, unplanned, unpremeditated) | |
| uncalculated(adjective, chance, ignorant, hidden, unconscious) | |
| undesigned(adjective, intention, unknowing, unaware, unplanned) | |
| causeless(adjective, chancy, chance 2) | |
| aimless(adjective, careless, casual, irregular, innocent) | |
| subsidiary | |
| unpredictable(adjective, extraordinary, wonderful, shocking, erratic) | |
| unwitting(adjective, ignorant, hidden, unconscious, unknowing) | |
| additional(adjective, casual, useless, extra, worthless) | |
| adscititious | |
| aleatory(adjective, unintended) | |
| happy | |
| hit-or-miss(adjective, careless, casual, erratic, frivolous) | |
| insignificant | |
| involuntary(adjective, careless, casual, innocent, ignorant) | |
| minor | |
| occasional(adjective, chance, secondary, subsidiary, related) |
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| APA | Smart Define. (2015). accidental thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/accidental/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "accidental thesaurus" https://smartdefine.org/accidental/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, accidental thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/accidental/thesaurus/synonyms>. |
| MLA | Smart Define. "accidental thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/accidental/thesaurus/synonyms> |