Synonyms of theories

theories

noun

plural of theory

as in hypotheses

an idea that is the starting point for making a case or conducting an investigation

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

Synonyms & Similar Words

• hypotheses
• premises
• assumptions
• propositions
• guesses
• theses
• suggestions
• notions
• theorems
• proposals
• feelings
• inferences
• speculations
• impressions
• conjectures
• presumptions
• presuppositions
• suppositions
• generalizations
• concepts
• suspicions
• hunches
• conceptions
• guesswork
• constructs
• abstractions
• surmises
• concessions
• inklings
• proffers

Antonyms & Near Antonyms

• facts
• assurances
• certainties
• knowledges

Example Sentences

Recent Examples of theories

No contemporary record confirms who commissioned it, however, and other theories have attributed its patronage to figures including Matilda, William the Conqueror's wife. — Tiago Ventura, Time, 10 July 2026

By more precisely measuring this consequence of general relativity, this study also serves to constrain alternate theories that call Einstein’s conclusions into question. — Mary Randolph, Scientific American, 8 July 2026

Ideas that comport with folk theories of politics—all leaders are equally corrupt ; immigrants steal jobs; policy problems have easy, commonsense solutions—prevail over the findings of subject-matter experts. — Rose Horowitch, The Atlantic, 8 July 2026

While Darwin differed from Lamarck about the source of evolutionary change, both placed the ability of organisms to act for themselves at the center of their theories. — Quanta Magazine, 8 July 2026

However, theories range from tradition, to economic concerns, to the ball’s technology, to the flow of the game. — ABC News, 8 July 2026

Other theories suggest that certain cells within the abdomen may transform into endometrial-like tissue, while some evidence points to stem cells or developmental changes that occur before birth. — Daryl Austin, USA Today, 7 July 2026

However, Trump allies have pushed election theories about a Venezuelan connection for years without proof, and a judge ruled in 2023 that statements made by Fox News personalities about Dominion’s connections to Venezuela were defamatory. — Kiara Moore, The Washington Examiner, 6 July 2026

Scott McCord, who plays the tragic Victor, says his wife and her friends are deeply invested in theories about the show’s plot. — Josh Wigler, HollywoodReporter, 6 July 2026