Theory
6 lettersnouncommonUpdated February 2026
Definition
A system of ideas explaining something based on principles.
“Einstein's theory of relativity changed physics forever.”
Related Words
Synonyms
Word Game Tips
🟩
Wordle
Contains TH- start and -ORY ending pattern.
🔤
Scrabble
Worth 12 points with valuable H and Y.
Explore Similar Words
Try These Tools
Dictionary References
Look up theory in an authoritative dictionary for full definitions, pronunciation, and etymology.

Ready to test your word skills?
Download Word Challenge and challenge yourself with our daily word puzzles. Guess the hidden word in six tries or fewer!