noun
a person who stares inquisitively at something that is unusual or out of the ordinary
verb
to turn one's head to stare inquisitively at something
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The traffic jam was caused by rubbernecking drivers slowing down to look at the accident.
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Don't be a rubberneck and hold up traffic by staring at the accident.
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Stop rubbernecking and just keep driving!
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She couldn't help but rubberneck at the drama unfolding in front of her.