21 entries under unexpected topic. ×

13
sudden(adjective, extraordinary, wonderful, shocking, surprise)
10
unforeseen(adjective, adverb, surprise, surprising)
10
unanticipated(adjective, adverb, surprise, surprising)
8
abrupt(adjective, sudden, surprising)
8
eye-opening(adjective, amazing, shocking, surprise, astonishing)
4
surprising(adjective, adverb, surprise, unpredicted)
4
unplanned(adjective, adverb, surprise, unprepared)
4
without warning(expression, adjective, extraordinary, wonderful, surprise)
3
subito(adjective, surprise, sudden)
3
unlooked-for(adjective, surprise, surprising)
2
by chance(adverb, unhoped, uncontemplated)
2
flasher(adjective, surprise, sudden)
2
from left field(expression, adjective, idiom, extraordinary, wonderful)
2
unpredicted(adjective, adverb, extraordinary, wonderful, shocking)
1
accidental(extraordinary, wonderful, shocking, astonishing, astounding)
1
astonishing(extraordinary, wonderful, shocking, astounding)
1
not bargained for(adjective, surprise, sudden)
1
not in the cards(adjective, surprise, sudden)
1
startling(extraordinary, wonderful, shocking, astonishing, astounding)
1
uncalculated(adjective, surprise, sudden)
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APASmart Define. (2015). out of the blue thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/out_of_the_blue/thesaurus/synonyms
ChicagoSmart Define. 2015. "out of the blue thesaurus" https://smartdefine.org/out_of_the_blue/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, out of the blue thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/out_of_the_blue/thesaurus/synonyms>.
MLASmart Define. "out of the blue thesaurus" 3 August 2015. Web. 30 September 2026. <https://smartdefine.org/out_of_the_blue/thesaurus/synonyms>