WordReference Random House Learner's Dictionary of American English © 2017
mis•use /n. mɪsˈyus; v. -ˈyuz/USA pronunciation   n., v.,  -used, -us•ing. 
  1. wrong or improper use: [uncountable]The principal was dismissed for misuse of school funds.[countable]a misuse of the word "appropriately.''

v. [+ object]
  1. to use incorrectly:to misuse a word.
  2. to treat harmfully;
    mistreat:to misuse a friend.

WordReference Random House Unabridged Dictionary of American English © 2017
mis•use  (n. mis yo̅o̅s;v. mis yo̅o̅z),USA pronunciation n., v.,  -used, -us•ing. 
  1. wrong or improper use;
  2. [Obs.]bad or abusive treatment.

  1. to use wrongly or improperly;
  2. to treat badly or abusively;
  • 1350–1400; Middle English; see mis-1, use
    • 1.See corresponding entry in Unabridged . misemployment, misappropriation.

Collins Concise English Dictionary © HarperCollins Publishers::

misuse n /ˌmɪsˈjuːs/misusage
  1. erroneous, improper, or unorthodox use: misuse of words
  2. cruel or inhumane treatment
vb /ˌmɪsˈjuːz/(transitive)
  1. to use wrongly
  2. to treat badly or harshly

'misused' also found in these entries:

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