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.

See Examples For:

theories

In plain language, that means he’s probably going to ramble late into the night about a bunch of baseless conspiracy theories.

From Slate ● Jul. 16, 2026

I know there’s all sorts of conspiracy theories going along, and I don’t think the FBI… I think the FBI is wasting their time if they’re doing that,” Donald Trump told reporters on Wednesday.

From Salon ● Jul. 14, 2026

The Administration should not want conspiracy theories to proliferate.

From The Wall Street Journal ● Jul. 12, 2026

If certain theories are correct and the universe has no built in clock, how can events be placed in the correct order?

From Science Daily ● Jul. 9, 2026

Mercury's orbit, for instance, wobbled in a way that disagreed with what Newton predicted, but on the whole, Newton’s theories were tested again and again, and they usually passed.

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