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English definition of “principle”

principle

noun [C or U] (RULE)    /ˈprɪn.sɪ.pl̩/ approving
C2 a moral rule or standard of good behaviour: She doesn't have any principles. He was a man of principle. Anyway, I can't deceive him - it's against all my principles. I never gamble, as a matter of principle (= because I believe it is wrong). She'd never ask to borrow money, on principle.Morality and rules of behaviour Grammar:Principal or principle?Principal as an adjective means ‘most important’:See more
(Definition of principle noun (RULE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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