misuse

Short definition from Wiktionary

Noun

1. 1
   An incorrect, improper or unlawful use of something.

Verb

1. 1
   To use (something) incorrectly.
2. 2
   To abuse or mistreat (something or someone).
3. 3
   To rape (a woman); later more generally, to sexually abuse (someone).
4. 4
   To abuse verbally, to insult.