Highly unlikely
Unacceptable and highly unlikely are semantically related. In some cases you can use "Unacceptable" instead an adjective phrase "Highly unlikely".
Unacceptable
Unacceptable adjective - Falling short of a standard.
Highly unlikely and unacceptable are semantically related. Sometimes you can use "Highly unlikely" instead an adjective "Unacceptable".
Nearby Word: unaccepted
Mutual synonyms
Cite this Source
Unacceptable and Highly unlikely. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/highly_unlikely/unacceptable
Highly unlikely & Unacceptable. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/highly_unlikely/unacceptable>.
Unacceptable or Highly unlikely. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/highly_unlikely/unacceptable.
Google Ngram Viewer shows how "highly unlikely" and "unacceptable" have occurred on timeline