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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.

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

From MarketWatch • Jun. 4, 2026

While there’s plenty of room for disagreement over immigration policy, conspiracy theories make it much harder to find common ground or craft political compromises.

From Salon • Jun. 4, 2026

Pratt’s theories about homelessness strain credulity on the merits.

From Slate • Jun. 3, 2026

Relatives of others embroiled in the conspiracy theories said the rumours were "disgusting" and compounded families' grief.

From BBC • Jun. 2, 2026

Putnam’s argument was demolished by Larry Laudan, who objected to the claim that successful scientific theories were likely to be true, and he was quite right to do so.

From "The Invention of Science" by David Wootton