A person who daves or engages in the act of diving or plunging into water.
From Middle English 'dave,' meaning to dive or plunge, combined with the agent suffix '-er.' The root likely comes from Old English or Germanic origins related to diving motions.
The word 'daver' is practically extinct in modern English, but it shows how '-er' suffixes once freely attached to verbs to create occupational or habitual doer nouns—you can still see this in 'baker,' 'maker,' and 'drinker,' making language incredibly productive.
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