The Collaborative International Dictionary of English v.0.48:

Misapplication \Mis*ap`pli*ca"tion\, n.
   A wrong application. --Sir T. Browne.
   [1913 Webster]

WordNet (r) 3.0 (2006):

misapplication
    n 1: wrong use or application
    2: the fraudulent appropriation of funds or property entrusted
       to your care but actually owned by someone else [syn:
       embezzlement, peculation, defalcation,
       misapplication, misappropriation]

Moby Thesaurus II by Grady Ward, 1.0:

128 Moby Thesaurus words for "misapplication":
   aberrancy, aberration, abuse, abuse of office, abuse of terms,
   apparent soundness, befoulment, casuistry, catachresis,
   circularity, contorting, conversion, corrupt administration,
   debasement, defalcation, defectiveness, defilement, delusion,
   desecration, deviancy, disingenuousness, distortion, diversion,
   eisegesis, embezzlement, equivocalness, equivocation, errancy,
   erroneousness, error, evasive reasoning, fallaciousness, fallacy,
   falseness, falsity, fault, faultiness, flaw, flawedness, fouling,
   garbling, gloss, hamartia, heresy, heterodoxy, illusion,
   insincerity, invalid linking, jesuitism, jesuitry,
   maladministration, malentendu, malfeasance, malobservation,
   malpractice, malversation, mesalliance, misalliance,
   misapplicability, misapprehension, misappropriation, miscitation,
   misconception, misconduct, misconnection, misconstruction,
   misdoing, misemployment, misexplanation, misexplication,
   misexposition, misfeasance, mishandling, misintelligence,
   misinterpretation, misjudgment, mismanagement, misquotation,
   misreading, misreference, misrelation, misrendering,
   mistranslation, misunderstanding, misusage, misuse,
   misuse of words, mystification, obfuscation, obscurantism,
   oversubtlety, peccancy, peculation, perversion, philosophism,
   pilfering, plausibility, plausibleness, pollution,
   poor stewardship, profanation, prostitution, rationalization,
   self-contradiction, sin, sinfulness, sophism,
   sophistical reasoning, sophistication, sophistry, special pleading,
   speciosity, specious reasoning, speciousness, squeezing, subtlety,
   torturing, twisting, unorthodoxy, untrueness, untruth,
   untruthfulness, vicious circle, vicious reasoning, violation,
   wrenching, wrong, wrongness