A person who bustles; someone who moves about busily and energetically, or who is actively engaged in bustling activity.
From 'bustle' plus agent suffix '-er,' forming a word for one who bustles; emerged in English from the 16th century onward to describe active, busy people.
The word 'bustler' is a reminder that English loves agent nouns—we add '-er' to almost any verb and suddenly have a person-label, though some combinations stick better in the cultural memory than others.
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