Assumption and Theory


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Assumption noun – Something taken as being true or factual and used as a starting point for a course of action or reasoning.
Usage example: your argument is faulty because it's based on erroneous assumptions

Theory is a synonym for assumption in opinion topic. In some cases you can use "Theory" instead a noun "Assumption", when it comes to topics like conjecture, supposition, reason, presumption. popular alternative
Nearby Words: assume, assumed, assumptive
Synonyms for Assumption


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Theory noun – An idea that is the starting point for making a case or conducting an investigation.
Usage example: set out to prove her theory that people can't really taste any difference between colas, so they buy according to the product's image

Assumption is a synonym for theory in hypothesis topic. You can use "Assumption" instead a noun "Theory", if it concerns topics such as opinion, conjecture, reason. popular alternative
Nearby Words: theoretical, theoretic, theoretically, theorist, theorizing
Synonyms for Theory

How words are described

good good assumption good theory
similar similar assumption similar theory
common common assumption common theory
certain certain assumption certain theory
Other adjectives: original, initial, correct, likely, wild, popular, logical, wrong, personal, general, incorrect, bizarre, basic.

Both words in one sentence

  • There's the assumption and theory by some fan authors that the Warden or Mistress (or both) may secretly have feelings for the other.
  • The plan makes the false assumption that modern humans are genetically identical to their stone-age ancestors, ignoring modern evolutionary theory.
  • Subverted on The Big Bang Theory when the girls take Sheldon out ballroom dancing, under the assumption that he'll be an awkward mess.
Cite this Source
Theory and Assumption. (2016). Retrieved 2021, June 19, from
Assumption & Theory. N.p., 2016. Web. 19 Jun. 2021. <>.
Theory or Assumption. 2016. Accessed June 19, 2021.

Synonyms for assumption
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Synonyms for theory
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Google Ngram Viewer shows how "assumption" and "theory" have occurred on timeline: