35 entries under sudden topic. ×
| flashing(adjective, unlooked-for, unhoped) | |
| fleeting(adjective, unlooked-for, unhoped) | |
| instantaneous(adjective, unlooked-for, unhoped) | |
| quickening(adjective, unlooked-for, unhoped) | |
| reckless(adjective, unlooked-for, unhoped) | |
| rushed(adjective, unlooked-for, unhoped) | |
| sharp(adjective, unlooked-for, unhoped) | |
| subito(adjective, surprise, unexpected) | |
| brash(adjective, unlooked-for, unhoped) | |
| brisk(adjective, unlooked-for, unhoped) | |
| flasher(adjective, surprise, unexpected) | |
| not bargained for(adjective, surprise, unexpected) | |
| not in the cards(adjective, surprise, unexpected) | |
| uncalculated(adjective, surprise, unexpected) | |
| unlooked for(adjective, surprise, unexpected) |
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| APA | Smart Define. (2015). out of the blue thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/out_of_the_blue/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "out of the blue thesaurus" https://smartdefine.org/out_of_the_blue/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2015, out of the blue thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/out_of_the_blue/thesaurus/synonyms>. |
| MLA | Smart Define. "out of the blue thesaurus" 3 August 2015. Web. 1 October 2026. <https://smartdefine.org/out_of_the_blue/thesaurus/synonyms> |