One of the mysteries of the English language finally explained.
1A person who or thing which bothers, annoys, or harasses someone.
2With modifying word: one who persistently pursues, annoys, or (in ironic use) is overly attentive to or enthusiastic about the person or thing specified.
Early 19th century; earliest use found in Cobbett's Weekly Political Register. From bother + -er.
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