A person who shoplifts, one who steals from shops.(noun)
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Use "shoplifter" in a sentence
"A "digital shoplifter" is a woman who sees an interesting hairstyle or garment in a fashion mag and snaps a photo of it with her camphone, then emails it to her pals to see what they think of it."
"Being able to deal with a shoplifter is the starting point for any police officer because it contains some simple elements of police work:"
"The security officer was not injured and told police she did not know the shoplifter was a man until the wig fell off."