The Collaborative International Dictionary of English v.0.48:

Indolence \In"do*lence\, n. [L. indolentia freedom from pain:
   cf. F. indolence.]
   [1913 Webster]
   1. Freedom from that which pains, or harasses, as toil, care,
      grief, etc. [Obs.]
      [1913 Webster]

            I have ease, if it may not rather be called
            indolence.                            --Bp. Hough.
      [1913 Webster]

   2. The quality or condition of being indolent; inaction, or
      lack of exertion of body or mind, proceeding from love of
      ease or aversion to toil; habitual idleness; indisposition
      to labor; laziness; sloth; inactivity.
      [1913 Webster]

            Life spent in indolence, and therefore sad.
                                                  --Cowper.
      [1913 Webster]

            As there is a great truth wrapped up in "diligence,"
            what a lie, on the other hand, lurks at the root of
            our present use of the word "indolence"! This is
            from "in" and "doleo," not to grieve; and indolence
            is thus a state in which we have no grief or pain;
            so that the word, as we now employ it, seems to
            affirm that indulgence in sloth and ease is that
            which would constitute for us the absence of all
            pain.                                 --Trench.
      [1913 Webster]

WordNet (r) 3.0 (2006):

indolence
    n 1: inactivity resulting from a dislike of work [syn:
         indolence, laziness]