A person who rides a bicycle, or someone involved in cycling activities.
From 'cycle' (Greek kyklos) plus the agent suffix '-er' (Old English), meaning 'one who does the action.' This became common in the 1890s when bicycles became popular.
The term 'cycler' appeared right alongside the bicycle boom—it was considered more elegant than 'rider,' and Victorian society loved it so much that cycler clubs became major social institutions.
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