52 entries under adjective topic. ×
| sudden(extraordinary, wonderful, shocking, surprise) | |
| unforeseen(adverb, surprise, unexpected, surprising) | |
| unanticipated(adverb, surprise, unexpected, surprising) | |
| abrupt(unexpected, sudden, surprising) | |
| eye-opening(amazing, shocking, surprise, astonishing) | |
| all of a sudden(expression, idiom, surprising, not expected) | |
| impetuous(sudden, unlooked-for, unhoped) | |
| impulsive(extraordinary, wonderful, quick, shocking) | |
| brusque(sudden, surprising, unlooked-for) | |
| fast(sudden, surprising, unlooked-for) | |
| hasty(sudden, unlooked-for, unhoped) | |
| rapid(sudden, surprising, unlooked-for) | |
| unexpected(adverb, surprise, surprising, unpredicted) | |
| quick(sudden, surprising, unlooked-for) | |
| swift(sudden, surprising, unlooked-for) | |
| accelerated(sudden, unlooked-for, unhoped) | |
| all at once(expression, idiom, surprising, not expected) | |
| headlong(sudden, unlooked-for, unhoped) | |
| hurried(sudden, unlooked-for, unhoped) | |
| immediate(sudden, unlooked-for, unhoped) |
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| APA | Smart Define. (2015). out of the blue thesaurus. Retrieved September 29, 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 September 29, 2026). |
| Harvard | Smart Define 2015, out of the blue thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/out_of_the_blue/thesaurus/synonyms>. |
| MLA | Smart Define. "out of the blue thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/out_of_the_blue/thesaurus/synonyms> |