12
probably(adverb, happen, likely, apparently, possibly)
11
probable(adjective, sound, reasonable, sensible, rational)
11
hopefully(hope, expression, luck, fortune, manner)
10
no doubt(expression, certainly, undoubtedly, probably, doubtless)
10
undoubtedly(adverb, likely, certainly, surely, doubtless)
10
very likely(expression, certainly, undoubtedly, doubtless)
9
doubtless(adjective, adverb, likely, certainly, surely)
9
beyond doubt(expression, certainly, undoubtedly, doubtless)
9
like enough(expression, adverb, certainly, truly, apparently)
9
in all probability(expression, idiom, certainly, undoubtedly, probably)
8
doubtlessly(adverb, certainly, probably, presumably)
8
likely(adjective, adverb, possible, probable, apparently)
7
apparently(adverb, likely, certainly, surely, undoubtedly)
7
certainly(adverb, likely, surely, undoubtedly, doubtless)
7
feasibly(adverb, likely, possible, probable, credible)
7
like as not(expression, idiom, certainly, undoubtedly, probably)
7
perhaps(adverb, likely, possible, probable, credible)
7
potentially(adverb, likely, possible, probable, credible)
7
prolly(adverb, likely, possible, probable, credible)
7
seemingly(adverb, likely, possible, probable, credible)
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APASmart Define. (2015). most likely thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/most_likely/thesaurus/synonyms
ChicagoSmart Define. 2015. "most likely thesaurus" https://smartdefine.org/most_likely/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, most likely thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/most_likely/thesaurus/synonyms>.
MLASmart Define. "most likely thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/most_likely/thesaurus/synonyms>