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English definition of “demonstrate”

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demonstrate

verb uk   /ˈdem.ən.streɪt/ us  

demonstrate verb (SHOW)

B2 [T] to show or make make something clear: These numbers clearly demonstrate the size of the economic problem facing the country. [+ that] Research has demonstrated that babies can recognize their mother's voice very soon after birth. These problems demonstrate the importance of strategic planning.C1 [T] to show something and explain how it works: He got a job demonstrating kitchen equipment in a department store. [+ question word] The teacher demonstrated how to use the equipment.
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demonstrate verb (EXPRESS)

C2 [T] to express or show that you have a particular feeling, quality, or ability: He has demonstrated a genuine interest in the project. His answer demonstrated a complete lack of understanding of the question.

demonstrate verb (PROTEST)

B2 [I] to make a public expression that you are not satisfied about something, especially by marching or having a meeting: Thousands of people gathered to demonstrate against the new proposals.
(Definition of demonstrate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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