Certain
Certain adjective - Having been established and usually not subject to change.
Usage example: a certain percentage of the profits will go to charity
Negotiable is an antonym for certain.
Negotiable
Negotiable adjective - Open to question or dispute.
Usage example: the final judgment is not negotiable
Certain is an antonym for negotiable.
Both words in one sentence
- A soldier living in a completely pacifist society, and a man legally compelled to behave in certain ways in a society where every other individual has a non-negotiable right to self-determination.
Source: No Place for Me There
Cite this Source
Negotiable and Certain. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/certain/negotiable
Certain & Negotiable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/certain/negotiable>.
Negotiable or Certain. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/certain/negotiable.
Google Ngram Viewer shows how "certain" and "negotiable" have occurred on timeline