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indiscreet
indiscrete
indiscretion
indiscriminate
indiscriminating
indispensable
indispose
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indisputable
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indirect proof
in·di·rect proof (plural in·di·rect proofs)


noun  (plural in·di·rect proofs) 
Definition:
 
proof by disproving the opposite: in logic, proof of a conclusion by showing that assuming its negation will lead to a contradiction
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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