- Definitions|0
- Thesaurus|58
- Abbreviations|0
| unprepared(adverb, suddenly, unexpectedly, unawares, ignorantly) | |
| unready(adverb, suddenly, unexpectedly, unawares, ignorantly) | |
| unwittingly(adverb, short, sudden, suddenly, unexpectedly) | |
| adventitiously | |
| all at once(expression, idiom, ignorantly, unanticipatedly, uniformed) | |
| all of a sudden(expression, idiom, ignorantly, unanticipatedly, uniformed) | |
| amazement | |
| asleep at switch(expression, idiom, ignorantly, unwatchful) | |
| asleep at the switch(expression, idiom, ignorantly, unwatchful) | |
| astonish | |
| asudden(ignorantly, unanticipatedly, uniformed) | |
| confound | |
| flat-footed(ignorantly, unwatchful) | |
| forthwith(adverb, suddenly, unexpectedly, unawares, abruptly) | |
| in the dark(expression, idiom, unanticipatedly, uniformed) | |
| innocently | |
| marvel | |
| naively | |
| not on the job(expression, idiom, ignorantly, unwatchful) | |
| obliviously |
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| APA | Smart Define. (2015). by surprise thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/by_surprise/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "by surprise thesaurus" https://smartdefine.org/by_surprise/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, by surprise thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/by_surprise/thesaurus/synonyms>. |
| MLA | Smart Define. "by surprise thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/by_surprise/thesaurus/synonyms> |