lei5 leon6理論理论
Jyutpinglei5 leon6
Yaleléih leuhn
Definition
Theory; a conceptual framework or principle used to explain facts and phenomena.
neutralschoolwork
How it's used
Use this word primarily in academic, professional, or formal contexts when discussing abstract frameworks or logical systems. In everyday casual speech, people often prefer using 道理 to refer to general logic or common sense rather than a formal academic theory. It is frequently paired with the classifier 套 when describing a comprehensive set of ideas.
Measure word
tou3套touExamples
The theory he mentioned seems to make a lot of sense.
You only know how to talk about theory, have you thought about how to implement it?
Related words
Common phrases
theoretical foundation
armchair strategy; empty theorizing
Common mistake
Do not confuse this with the verb 理論, which means to argue or reason with someone. As a noun, it refers to a theory, but as a verb, it implies a verbal confrontation or dispute.
Grammar color guide
Noun
Verb
Adjective
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Pronoun
Classifier
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Grammar guides
- In 30 secondsThe whole language at a glance. No tenses, no plurals, six tones, sentence particles. Read this before you dive into any specific topic.
- ParticlesSentence particles add tone, emotion, and nuance. Learn the most common particles in Cantonese and how to use them.
- Possession (嘅)How to say my, your, and his, and how to link a describing word to a noun, all with the little word 嘅 (ge3).



