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repel
repellent
repent (1)
repent (2)
repercussion
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replay attack
re·play at·tack (plural re·play at·tacks)


noun 
Definition:
 
comput fraudulent resending of transmitted data: an attack on computer security by resending a password that was previously legitimately sent by somebody else
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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