| out of the blue(expression, idiom, adverb, unexpectedly, abruptly) | |
| without warning(expression, quickly, unexpectedly, abruptly, ignorantly) | |
| out of nowhere | |
| swiftly(quickly, unexpectedly, abruptly) | |
| abruptly(adverb, fast) | |
| unexpectedly | |
| in one fell swoop | |
| all at once(expression, idiom, adverb, quickly, unexpectedly) | |
| without delay(expression, ignorantly, unanticipatedly, uniformed) | |
| unpredictably | |
| unawares | |
| without hesitation(expression, adverb, suddenly, ignorantly, unanticipatedly) | |
| precipitously | |
| from nowhere(expression, adverb, unexpectedly) | |
| quickly | |
| on spur of moment(expression, idiom, quickly, unexpectedly, abruptly) | |
| immediately(adverb, suddenly, unexpectedly) | |
| hastily | |
| in a flash(expression, idiom, adverb, quickly, suddenly) | |
| unaware(unexpectedly, abruptly, unanticipatedly, uniformed) |
For more, visit
All_of_a_sudden on
Power Thesaurus
| APA | Smart Define. (2015). all of a sudden thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/all_of_a_sudden/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "all of a sudden thesaurus" https://smartdefine.org/all_of_a_sudden/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, all of a sudden thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/all_of_a_sudden/thesaurus/synonyms>. |
| MLA | Smart Define. "all of a sudden thesaurus" 12 July 2015. Web. 22 September 2026. <https://smartdefine.org/all_of_a_sudden/thesaurus/synonyms> |