naivety

from WordNet (r) 3.0 (2006)

naivety
    n 1: lack of sophistication or worldliness [syn: {naivete},
         {naivety}, {naiveness}] [ant: {mundaneness}, {mundanity},
         {sophistication}, {worldliness}]

from The Collaborative International Dictionary of English v.0.48

naivety \na*iv"e*ty\, Naivety \Na"["i]ve`ty\, n.
   Na["i]vet['e]. --Carlyle.
   [1913 Webster]

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