Definition of freedom of speech noun from the Oxford Advanced Learner's Dictionary

 

freedom of speech

 noun
noun
BrE
 
; NAmE
 
[uncountable]
 
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the right to express any opinions in public. This right became part of American law under the First Amendment. If the opinions expressed are false or damage a person's reputation, however, that person can take legal action under US law. In Britain, people are free to express most opinions, but it is against the law to express some ideas, e.g. ideas that aim to cause racial hatred.