36
unforeseen(adjective, great, excellent, shock, violent)
27
sudden(adjective, passionate, violent, careless, casual)
26
unanticipated(adjective, great, excellent, superb, super)
20
surprising(adjective, adverb, unusual, strange, exceptional)
18
unpredicted(adjective, adverb, great, excellent, superb)
17
abrupt(adjective, passionate, violent, fast, quick)
16
extraordinary(adjective, great, excellent, unusual, strange)
15
curious(adjective, extraordinary, unusual, strange, new)
14
accidental(adjective, careless, chance, casual, shocking)
14
unusual(adjective, obscure, strange, new, exceptional)
14
startling(adjective, great, excellent, superb, super)
12
astonishing(adjective, great, excellent, unusual, strange)
12
incredible(adjective, great, excellent, unusual, strange)
11
chance(noun, adjective, careless, uncertain, casual)
11
fantastic(adjective, great, excellent, superb, exceptional)
11
fortuitous(adjective, chance, shocking, astonishing, astounding)
11
splendid(great, excellent, superb, super, groovy)
10
odd(adjective, unusual, strange, exceptional, chance)
10
remarkable(adjective, great, excellent, unusual, strange)
10
strange(adjective, obscure, unusual, new, exceptional)
<1234510>
11 years ago|14k views|share |citing 
APASmart Define. (2015). unexpected thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unexpected/thesaurus/synonyms
ChicagoSmart Define. 2015. "unexpected thesaurus" https://smartdefine.org/unexpected/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unexpected thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unexpected/thesaurus/synonyms>.
MLASmart Define. "unexpected thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/unexpected/thesaurus/synonyms>