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

Some of the most fundamental questions about the universe remain open, leaving room for new observations, stronger theories, and unexpected ideas to reshape our understanding.

From Science Daily ● Sep. 13, 2026

The workplace is full of Scotts and Saras—people who are judging one another’s emails and work based on their theories of what AI content ought to look like and whether it was used appropriately.

From The Wall Street Journal ● Sep. 11, 2026

For many years, M. trumani played a major role in theories about the ecology of Ice Age North America.

From Science Daily ● Sep. 8, 2026

Fans have also posted theories about other "clues" on social media.

From BBC ● Sep. 4, 2026

These theories also made testable predictions about the way gravity works.

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