Improbable
Improbable adjective - Not likely to be true or to occur.
Most likely is an antonym for improbable.
Nearby Words: improbability, improbably
Most likely
Both terms in one sentence
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Contrast Batman Gambit which is based on the most likely outcome, based on the planner's knowledge of the people involved, rather than an improbable one.
Source: Gambit Roulette - In addition, any event that is infinitely improbable is most likely to instantly happen as soon as the field is turned on.
Source: Million-to-One Chance -
Dead-Eye is most likely a reference to the Improbable Aiming Skills shown in many westerns, particularly Spaghetti Westerns.
Source: Video Game / Red Dead Redemption
Cite this Source
Most likely and Improbable. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/improbable/most_likely
Improbable & Most likely. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/improbable/most_likely>.
Most likely or Improbable. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/improbable/most_likely.
Google Ngram Viewer shows how "improbable" and "most likely" have occurred on timeline