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ironworks
irony
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Iroquois
irradiant
irradiate
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irrefutable
ir·ref·u·ta·ble [ ìrrə fytəb'l, i réffyətəb'l ]


adjective 
Definition:
 
incapable of being disproved: impossible to refute or disprove
[Early 17th century. < late Latin irrefutabilis< Latin refutare "refute"]

ir·ref·u·ta·bil·i·ty [ ìrrə fyootə bíllətee, i rèffyətə bíllətee ] noun
ir·ref·u·ta·bly adverb
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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