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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.

Roosevelt employed Mahan’s theories as assistant secretary of the Navy during the Spanish-American War in 1898, when the U.S. seized Cuba, Puerto Rico, the Philippines, and more.

From Barron's • Jun. 5, 2026

It is testing many long-held theories about bitcoin’s place in the broader universe of tradeable assets.

From MarketWatch • Jun. 4, 2026

While Left expressed faith in his stock theories, prosecutors alleged that he aimed to incite small price moves that would yield a quick profit.

From The Wall Street Journal • Jun. 2, 2026

Both his loyal supporters and well-financed critics have a hard time explaining Becerra’s rapid ascent, with theories ranging from outright luck to a nefarious social media push.

From Los Angeles Times • Jun. 1, 2026

Popper distinguished between the world of physical objects, the world of mental processes and the third world, the world of ‘problems, conjectures, theories, arguments, journals and books’.

From "The Invention of Science" by David Wootton