1. In an incorrect manner
   - falsely 
2. In an inaccurate manner
   "he decided to reveal the details only after other sources had reported them incorrectly"
   - wrongly, wrong, fallaciously

See also: incorrect

Antonym: correctly

• unstated
• unstatesmanlike
• unsteadily
• unsteadiness
• unsteady
• unstep
• unsterilised
• unsterilized
• unstick
• unstilted
• unstimulated
• unstimulating
• unstinted
• unstinting
• unstintingly
• unstirred
• unstop
• unstoppable
• unstoppered
• unstrain
• unstrained
• unstrap
• unstratified
• unstratified language
• unstressed