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preventative1650s, from prevent + -ative. OED points out that preventive is better-formed. As a noun, from 1774.
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preventative(n) remedy that prevents or slows the course of an illness or disease(n) any obstruction that impedes or is burdensome(n) an agent or device intended to prevent conception(adj) tending to prevent or h [..]
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3 |
preventativea drug, vaccine, etc., for preventing disease
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