Source : Webster's Revised Unabridged Dictionary (1913)

Inconvenient \In`con*ven"ient\, a. [L. inconveniens unbefitting:
   cf. F. inconv['e]nient. See {In-} not, and {Convenient}.]
   1. Not becoming or suitable; unfit; inexpedient.

   2. Not convenient; giving trouble, uneasiness, or annoyance;
      hindering progress or success; uncomfortable;
      disadvantageous; incommodious; inopportune; as, an
      inconvenient house, garment, arrangement, or time.

   Syn: Unsuitable; uncomfortable; disaccommodating; awkward;
        unseasonable; inopportune; incommodious;
        disadvantageous; troublesome; cumbersome; embarrassing;
        objectionable.

Source : WordNet®

inconvenient
     adj 1: not suited to your comfort, purpose or needs; "it is
            inconvenient not to have a telephone in the kitchen";
            "the back hall is an inconvenient place for the
            telephone" [ant: {convenient}]
     2: not conveniently timed; "an early departure is inconvenient
        for us"