Wannabe
Definition 1 of 2
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Cultural Imitation
It may imply a lack of originality, suggesting that the wannabe is copying someone else's style or achievements. The new singer is just another Madonna wannabe.
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Often Negative
Usually used to criticize someone for not being genuine or for trying too hard. Stop being such a pop star wannabe and be yourself!
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Colloquial Usage
It's a casual word, often used among friends or in the media, but not in formal situations. Did you see those model wannabes at the party?