noun
a young person, typically a girl, who keenly follows the latest fashions and pop music
adjective
relating to or characteristic of a teenybopper
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The museum exhibit attracted a crowd of teenage visitors, including a few teenyboppers.
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I can't believe my little sister is already turning into a total teenybopper.
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Those teenyboppers are always hanging out at the mall.
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The pop star's latest album is sure to appeal to teenyboppers everywhere.