[ droun-proof ]
/ ˈdraʊnˌpruf /

verb (used with object)

to teach (a person) the technique of drownproofing.


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Origin of drownproof

First recorded in 1975–80; back formation from drownproofing
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020