Definition of misusage in US English:

misusage

noun

archaic
  • Unjust treatment.

    ‘they were determined to defend themselves from misusage’
    • ‘Soon he fell ill with misusage and grievance, and one day that one dreadful, horrible day, his light was doused.’
    mistake, error, blunder, slip, lapse, solecism, impropriety
    View synonyms

Pronunciation

misusage

/misˈyo͞osij//mɪsˈjusɪdʒ/