WordNet (r) 3.0 (2006):

mundaneness
    n 1: the quality or character of being intellectually
         sophisticated and worldly through cultivation or experience
         or disillusionment [syn: sophistication, worldliness,
         mundaneness, mundanity] [ant: naiveness, naivete,
         naivety]
    2: the quality of being commonplace and ordinary [syn:
       ordinariness, mundaneness, mundanity] [ant:
       extraordinariness]