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So simple or straightforward as to make mistakes impossible: a goofproof recipe.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Verb||1.||goofproof - proof against human misuse or error; "foolproof this appliance"|
proof - make resistant (to harm); "proof the materials against shrinking in the dryer"
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