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

Concertgoers flooded social media with their bizarre conspiracy theories after seeing the star perform at MetLife Stadium in New Jersey, claiming that the singer secretly hired a lookalike to take his place during the performance.

From MarketWatch ● Aug. 18, 2026

If the interpretation is confirmed, the result could help physicists test how established theories of quantum physics behave under some of the most extreme conditions found anywhere in the universe.

From Science Daily ● Aug. 18, 2026

Shovel in the fact that some conspiracy theories have turned out to be at least semi-plausible—cue the drip-drip of UFO disclosures—and you have fertile soil for sprawling kudzu-like growth in the business of manufactured truth.

From The Wall Street Journal ● Aug. 13, 2026

Many also live around hydrothermal vents on the ocean floor, environments that some theories identify as possible locations where life first arose.

From Science Daily ● Aug. 12, 2026

According to the best medical theories of his day, Dr. Harlow diagnoses an imbalance of bodily "humors."

From "Phineas Gage" by John Fleischman