inopportune

from WordNet (r) 3.0 (2006)

inopportune
    adj 1: not opportune; "arrived at a most inopportune hour"; "an
           inopportune visit" [ant: {opportune}]

from The Collaborative International Dictionary of English v.0.48

Inopportune \In*op`por*tune"\, a. [L. inopportunus: cf. F.
   inopportun. See {In-} not, and {Opportune}.]
   Not opportune; inconvenient; unseasonable; as, an inopportune
   occurrence, remark, etc.
   [1913 Webster]

         No visit could have been more inopportune. --T. Hook.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

54 Moby Thesaurus words for "inopportune":
      bad, futile, ill-advised, ill-considered, ill-seasoned, ill-suited,
      ill-timed, impolitic, improper, inadvisable, inappropriate, inapt,
      inauspicious, incongruous, inconvenient, inept, inexpedient,
      infelicitous, intempestive, intrusive, irrelevant, late,
      mal a propos, malapropos, mistimed, off base, out of line,
      out of phase, out of place, out of time, premature, too late,
      too soon, unbefitting, undesirable, unfavorable, unfit, unfitting,
      unfortunate, unhandy, unhappy, unlucky, unmeet, unprofitable,
      unpropitious, unready, unripe, unseasonable, unseemly, unsuitable,
      untimely, untoward, unwise, wrong