🇬🇧🇪🇸 theory - teoría : English Lesson

Meaning of "theory" ("teoría"), detailed definition, and a short video lesson below.

A theory is a well-thought-out explanation or idea that is based on evidence and reasoning. It is used to explain how or why something happens and is often tested through experiments and observations.

Watch and listen to this English flashcard to understand the word in more detail, with an easy example sentence.

My theory is that my cat thinks she owns the house and just lets us live here.

My theory is that my little brother is actually a robot because he never runs out of energy.

I have a theory that my dog understands everything I say but just ignores me on purpose.

I have a theory that adults secretly love cartoons but pretend they don’t.

My theory about vegetables is that they only exist to make kids suffer.

Sam had a theory about the red car toy: the wheel was stuck. His sister had another theory: the battery was loose. They both tried a new theory: turn the wheel and press the battery. Each small try showed a theory. The car rolled. Sam and his sister clapped, happy that one theory was right.

This word is at the B1 level, which means it’s important for understanding and discussing familiar topics like work, school, or leisure. Words at this level help you express your thoughts, opinions, and experiences with more detail.

Expanding your English vocabulary is one of the best ways to improve your pronunciation, spelling, and confidence in English. Watch the video above to memorize the word, understand its meaning, and see example sentences in action. Discover related words to grow your vocabulary naturally. Add words to your playlist for stress-free, effective learning—anytime, anywhere! Watch, learn, repeat.