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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.

The scientists suggested several theories for why these two humpbacks embarked on such "exceptional" deviations from the normal routes.

From Barron's • May 20, 2026

It begins with specious theories and disingenuous arguments advanced by people who believe themselves incapable of bigotry.

From The Wall Street Journal • May 13, 2026

His mother, Melanie, who was not his legal guardian and was heavily influenced by conspiracy theories, told him to throw away his passport.

From BBC • May 13, 2026

The comment sections became a maze of people trying to be helpful by identifying the subject of the post, while other folks offered their theories as to why Dylan was posting this particular content.

From Salon • May 12, 2026

This gave rise to a further dispute as to whether Leibniz had arrived at his theories, as he claimed, independently, or had cobbled them together on the basis of a reading of the Principia.

From "The Invention of Science" by David Wootton