Mediocre and Unacceptable

Opposite meaning words

Mediocre adjective - Of average to below average quality.

Usage example: your grades are mediocre and barely acceptable

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Unacceptable is an antonym for mediocre.

Nearby Word: mediocrity

Unacceptable adjective - Falling short of a standard.

Usage example: this work is entirely unacceptable

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Mediocre is an antonym for unacceptable.

Nearby Word: unaccepted

Cite this Source

Unacceptable and Mediocre. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/mediocre/unacceptable

Mediocre & Unacceptable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/mediocre/unacceptable>.

Unacceptable or Mediocre. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/mediocre/unacceptable.

Google Ngram Viewer shows how "mediocre" and "unacceptable" have occurred on timeline