Proposition and Presumption

Proposition

Proposition noun - An idea that is the starting point for making a case or conducting an investigation.
Usage example: started the discussion with the simple proposition that no one ever does anything out of pure altruism

Presumption and proposition are semantically related in conjecture topic. In some cases you can use "Presumption" instead a noun "Proposition", when it comes to topics like assumption.

Presumption

Presumption noun - Something taken as being true or factual and used as a starting point for a course of action or reasoning.
Usage example: the presumption of innocence

Proposition and presumption are semantically related in conjecture topic. Sometimes you can use "Proposition" instead a noun "Presumption", if it concerns topics such as assumption.

How words are described

legal legal proposition legal presumption
above above proposition above presumption
Cite this Source
Presumption and Proposition. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/proposition/presumption
Proposition & Presumption. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/proposition/presumption>.
Presumption or Proposition. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/proposition/presumption.
Google Ngram Viewer shows how "proposition" and "presumption" have occurred on timeline