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

• errand
• errand boy
• errant
• errantry
• erratic
• erratically
• erratum
• errhine
• erring
• erroneous
• erroneous belief
• erroneously
• erroneousness
• error
• error correction code
• error handling
• error message
• error-prone
• errorless
• ersatz
• Erse
• Erskine Caldwell
• Erskine Preston Caldwell
• erst
• erstwhile