The Collaborative International Dictionary of English v.0.48:

Improvidence \Im*prov"i*dence\, n. [L. improvidentia; OF.
   improvidence. Cf. Imprudence.]
   The quality of being improvident; lack of foresight or
   thrift.
   [1913 Webster]

         The improvidence of my neighbor must not make me
         inhuman.                                 --L'Estrange.
   [1913 Webster]

WordNet (r) 3.0 (2006):

improvidence
    n 1: a lack of prudence and care by someone in the management of
         resources [syn: improvidence, shortsightedness] [ant:
         providence]

The Devil's Dictionary (1881-1906):

IMPROVIDENCE, n.  Provision for the needs of to-day from the revenues
of to-morrow.