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irrationality (n.)
1560s, originally in the mathematical sense, from irrational + -ity. Meaning "unreasonableness, absurdity" is from 1640s.
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Definitions of irrationality from WordNet
Dictionary entries near irrationality
irradiant
irradiate
irradiation
irradicable
irrational
irrationality
irreclaimable
irrecognition
irreconcilable
irreconciliation
irrecoverable
