theories

NOUN

hypothesis, belief

Synonyms

STRONGEST

approach argument assumption code concept doctrine idea ideology method philosophy plan position premise proposal provision rationale scheme speculation suspicion system thesis understanding

STRONG

base basis codification conditions conjecture dogma feeling foundation grounds guess guesswork hunch impression outlook postulate presentiment presumption shot stab supposal supposition surmise theorem

WEAK

formularization suppose systemization

Antonyms

STRONGEST

disbelief fact information reality truth

STRONG

calculation knowledge measurement proof

WEAK

certainty

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

theories

Some theories have suggested that an ape-like foot was necessary for effective vertical climbing, while others allow for an ancestor with a more monkey-like foot.

From Science Daily ● Aug. 31, 2026

In commentary recently shared with MarketWatch, Straehl highlighted a couple of theories driving what he has identified as a shift toward more short-term trading in the U.S. equity market.

From MarketWatch ● Aug. 30, 2026

The different theories provide different answers for how dark matter should clump.

From Los Angeles Times ● Aug. 30, 2026

After Kirk died, Amor said, she had questions as conspiracy theories abounded online.

From Salon ● Aug. 26, 2026

A reporter crowed, “It has become a settled fact that Burr’s and the Buffalo doctors’ theories are the silliest humbugs of the day.”

From "American Spirits" by Barb Rosenstock