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Iroquoian
Iroquois
irradiant
irradiate
irradiation
irradicable
irrational
irrational number
irrationalism
Irrawaddy
irreal
irreclaimable
irreconcilable
irrecoverable
irredeemable
irredenta
Irredentist
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irrationalism
ir·ra·tion·al·ism [ i ráshən'l ìzzəm, i ráshnə lìzzəm ]


noun 
Definition:
 
1. absence of reason: the state of lacking reason or logic
2. belief in feelings: the belief that feelings and intuition are more important than reason

ir·ra·tion·al·is·tic [ i ràshən'l ístik, i ràshnə lístik ] adjective
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