The Collaborative International Dictionary of English v.0.48:

Inconvenience \In`con*ven"ience\, n. [L. inconvenientia
   inconsistency: cf. OF. inconvenience.]
   [1913 Webster]
   1. The quality or condition of being inconvenient; lack of
      convenience; unfitness; unsuitableness; inexpediency;
      awkwardness; as, the inconvenience of the arrangement.
      [1913 Webster]

            They plead against the inconvenience, not the
            unlawfulness, . . . of ceremonies in burial.
                                                  --Hooker.
      [1913 Webster]

   2. That which gives trouble, embarrassment, or uneasiness;
      disadvantage; anything that disturbs quiet, impedes
      prosperity, or increases the difficulty of action or
      success; as, one inconvenience of life is poverty.
      [1913 Webster]

            A place upon the top of Mount Athos above all clouds
            of rain, or other inconvenience.      --Sir W.
                                                  Raleigh.
      [1913 Webster]

            Man is liable to a great many inconveniences.
                                                  --Tillotson.

   Syn: Incommodiousness; awkwardness; disadvantage; disquiet;
        uneasiness; disturbance; annoyance.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inconvenience \In`con*ven"ience\, v. t.
   To put to inconvenience; to incommode; as, to inconvenience a
   neighbor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

inconvenience
    n 1: an inconvenient discomfort [syn: inconvenience,
         incommodiousness]
    2: a difficulty that causes anxiety [syn: troublesomeness,
       inconvenience, worriment]
    3: the quality of not being useful or convenient [ant:
       convenience]
    v 1: to cause inconvenience or discomfort to; "Sorry to trouble
         you, but..." [syn: trouble, put out, inconvenience,
         disoblige, discommode, incommode, bother]

Moby Thesaurus II by Grady Ward, 1.0:

173 Moby Thesaurus words for "inconvenience":
   abuse a privilege, ado, aggravate, aggravation, ail, annoy,
   annoyance, anxiety, awkwardness, be the matter, beset, besetment,
   bother, bothersomeness, bulkiness, burden, burdening,
   burdensomeness, burthen, can of worms, cargo, charge, charging,
   clumsiness, complicate matters, concern, cross, cumbersomeness,
   cumbrance, deadweight, demand, difficulty, disaccommodate,
   disadvantage, discomfort, discommode, discommodity, discompose,
   disoblige, disrupt, disruption, distress, disturb, disturbance,
   drawback, embarrassment, encroach upon, encumbrance, evil,
   exaction, exasperate, exasperation, freight, freighting, fuss,
   futility, great ado, hamper, handicap, harass, harm, headache,
   hindrance, hulkiness, impediment, impedimenta, impoliticalness,
   impoliticness, impose on, impose upon, imposing an onus,
   imposition, impracticality, impropriety, inadvisability,
   inappropriateness, inaptitude, inauspiciousness, incommode,
   incommodity, incongruity, inconsiderateness, inconveniency,
   inconvenientness, ineptitude, inexpedience, inexpediency,
   infelicity, infliction, inopportuneness, inopportunity,
   intempestivity, interfere, intermeddle, interruption, intrusion,
   irk, irrelevance, irritate, lateness, laying on, load, loading,
   loading down, lumber, make free with, matter, meddle, nuisance,
   obtrude upon, obtrusiveness, onerousness, onus, overstep, pack,
   pain, peck of troubles, penalty, perplex, perturb, plague,
   ponderousness, pother, prematurity, presume on, presume upon,
   presumptuousness, problem, put about, put out,
   put to inconvenience, put to it, put to trouble, puzzle,
   sea of troubles, stew, take a liberty, take liberties, tasking,
   taxing, torment, trial, trouble, troublesomeness, try,
   undesirability, unfavorableness, unfitness, unfittingness,
   unfortunateness, unhandiness, unmanageability, unmeetness,
   unprofitability, unprofitableness, unpropitiousness, unripeness,
   unseasonableness, unseemliness, unsuitability, untimeliness,
   unwarranted demand, unwieldiness, unwiseness, upset, uselessness,
   vex, weight, weighting, white elephant, worry, worthlessness,
   wrongness