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

These theories spreading online, one expert says, stem from people’s struggles to find a fulfilling explanation for what has happened. — Rebekah Riess, CNN Money, 22 Aug. 2026

DeRenne, the hitting coach for the Triple-A Durham Bulls, would help test theories for his father, Coop, a professor of kinesiology at the University of Hawaii. — Tyler Kepner, New York Times, 21 Aug. 2026

This mystery has tantalized scientists since Charles Darwin mused on it in 1871, spawning no shortage of competing theories about the origins of Earth’s biology around four billion years ago. — Philip Ball, Scientific American, 20 Aug. 2026

JonBenét’s involvement in beauty pageants became fodder for tabloids, suspicion surrounded her parents even after they had been cleared as suspects, and numerous theories developed regarding who killed her. — Encyclopedia Britannica, 20 Aug. 2026

Various theories surrounding the murders arose following the verdict, but they were never officially solved. — Wilson Chapman, IndieWire, 20 Aug. 2026

Not just the Players, but everyone watching seems to have a theory, and with every elimination, those theories are thrown out the window. — Naman Ramachandran, Variety, 20 Aug. 2026

Maybe no single one of these theories is right—but, rather, all of them are. — Olga Khazan, The Atlantic, 20 Aug. 2026

The sheriff's office also sought to rebut theories that had circulated publicly about the case, including claims that evidence was missing or the crime scene had been manipulated. — Zachary Bynum, CBS News, 14 Aug. 2026