5 entries under fortunately topic. ×

6
accidentally(adverb, short, sudden, suddenly, casually)
3
unintentionally(adverb, short, sudden, suddenly, unawares)
2
unwittingly(short, sudden, suddenly, unawares)
1
by accident(expression, idiom, short, sudden, suddenly)
1
by mistake(expression, short, sudden, suddenly, unawares)
11 years ago|9.1k views|share |citing 
APASmart Define. (2015). unexpectedly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unexpectedly/thesaurus/synonyms
ChicagoSmart Define. 2015. "unexpectedly thesaurus" https://smartdefine.org/unexpectedly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unexpectedly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unexpectedly/thesaurus/synonyms>.
MLASmart Define. "unexpectedly thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/unexpectedly/thesaurus/synonyms>