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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.

But that has not stopped conspiracy theories and disinformation about vaccines and hantavirus spreading widely online -- another echo of the Covid era.

From Barron's • 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

By comparing Dante's descriptions to modern theories of asteroid impacts and crater formation, researchers argue that the 14th-century poet envisioned an Earth-altering cosmic event long before scientists understood meteoritics.

From Science Daily • May 11, 2026

I texted Lorren under my desk, catching her up on the various theories.

From "Bye Forever, I Guess" by Jodi Meadows