12 entries under expression topic. ×
| out of the blue(idiom, adverb, unexpectedly, abruptly) | |
| without warning(quickly, unexpectedly, abruptly, ignorantly) | |
| all at once(idiom, adverb, quickly, unexpectedly) | |
| without delay(ignorantly, unanticipatedly, uniformed) | |
| without hesitation(adverb, suddenly, ignorantly, unanticipatedly) | |
| from nowhere(adverb, unexpectedly) | |
| on spur of moment(idiom, quickly, unexpectedly, abruptly) | |
| in a flash(idiom, adverb, quickly, suddenly) | |
| straight away(adverb, suddenly) | |
| by surprise(ignorantly, unanticipatedly, uniformed) | |
| in the dark(idiom, unanticipatedly, uniformed) | |
| like a bolt from the blue(idiom, adverb, suddenly) |
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| APA | Smart Define. (2015). all of a sudden thesaurus. Retrieved September 24, 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 24, 2026). |
| Harvard | Smart Define 2015, all of a sudden thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/all_of_a_sudden/thesaurus/synonyms>. |
| MLA | Smart Define. "all of a sudden thesaurus" 12 July 2015. Web. 24 September 2026. <https://smartdefine.org/all_of_a_sudden/thesaurus/synonyms> |