Certainty and Nightmare

Opposite meaning words

Certainty noun - A state of mind in which one is free from doubt.

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Nightmare is an antonym for certainty.

Nearby Words: certain, certainly

Nightmare noun - A situation or state that causes great suffering and unhappiness.

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Certainty is an antonym for nightmare in bad dream or experience topic.

Nearby Word: nightmarish

long	long certainty	long nightmare
exact	exact certainty	exact nightmare
complete	complete certainty	complete nightmare
utter	utter certainty	utter nightmare
Other adjectives: total, real, terrible, absolute, greater.

Cite this Source

Nightmare and Certainty. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/certainty/nightmare

Certainty & Nightmare. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/certainty/nightmare>.

Nightmare or Certainty. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/certainty/nightmare.

Google Ngram Viewer shows how "certainty" and "nightmare" have occurred on timeline