Hypothesis
Hypothesis noun - An idea that is the starting point for making a case or conducting an investigation.
Usage example: working on the hypothesis that teenagers function better in the late morning, some high schools are starting classes later
Show all Definitions
Synonyms for Hypothesis
Speculation is a synonym for hypothesis in theory topic. In some cases you can use "Speculation" instead a noun "Hypothesis", when it comes to topics like opinion, conjecture, assumption, supposition. popular alternative
Speculation
Speculation noun - A hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence).
Usage example: speculations about the outcome of the election
Hypothesis is a synonym for speculation in theory topic. You can use "Hypothesis" instead a noun "Speculation", if it concerns topics such as opinion, conjecture, assumption, supposition. popular alternative
Mutual synonyms
Related pairs
- inference and hypothesis
- inference and speculation
- belief and hypothesis
- belief and speculation
- surmise and hypothesis
- surmise and speculation
- notion and hypothesis
- notion and speculation
- opinion and hypothesis
- opinion and speculation
- thought and hypothesis
- thought and speculation
- conjecture and hypothesis
- conjecture and speculation
How words are described
| common | common hypothesis | common speculation |
| wild | wild hypothesis | wild speculation |
| popular | popular hypothesis | popular speculation |
| real | real hypothesis | real speculation |
| Other adjectives: interesting, personal, above, scientific, modern, venomous. | ||
Both words in one sentence
-
The venomous Sinornithosaurus speculation was also brought up, but this was just treated as a hypothesis as only the tooth of the animal was featured.
Source: Raptor Attack -
If taken far enough, such speculation can overlap with the Literary Agent Hypothesis.
Source: Celebrity Paradox -
Although it could be argued that they were doing exactly that by being so presumptuous as to decide that their hypothesis about the evolutionary direction of the Valakians and the Menk was predestined and not just speculation on Phlox's part.
Source: Series / Star Trek: Enterprise
Cite this Source
Speculation and Hypothesis. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/hypothesis/speculation
Hypothesis & Speculation. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/hypothesis/speculation>.
Speculation or Hypothesis. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/hypothesis/speculation.
Google Ngram Viewer shows how "hypothesis" and "speculation" have occurred on timeline