abuse of a right; unlawful use of an office, franchise, benefit, etc.
Origin of misuser1
1615–25; noun use of Middle French mesuser to misuse
a person who misuses.
Origin of misuser2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
law an abuse of some right, privilege, office, etc, such as one that may lead to its forfeiture
(often in combination) a person who regularly abuses alcohol, drugs, etcheroin misusers
Word Origin for misuser
C17: from Old French mesuser (infinitive used as noun)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012