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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.

This helped researchers rule out competing theories, including the idea that the material came from older supernova explosions that slowly faded over millions of years.

From Science Daily • May 14, 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

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

After a period of tension due to Alex challenging Melanie's theories, she did not allow him to live in her caravan and he was forced to spend six months sleeping in a tent.

From BBC • May 13, 2026

Einstein’s theories corrected Newton’s errors; they explained Mercury’s wobble, for instance.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife