undefined

/ˌʌndɪˈfaɪnd/
adjective
  1. Not clearly described, explained, or given a specific meaning.
    • Her role in the project remained undefined for weeks.
    • The term 'success' is often undefined and means different things to different people.
    • The rules of the game were left undefined, causing confusion.
  2. Not having fixed limits or boundaries.
    • The property line was undefined, leading to a dispute with the neighbor.
    • In mathematics, division by zero is undefined.
    • The shape of the cloud was undefined, shifting constantly.
What does "undefined" mean? | whatsthatwordmean | whatsthatwordmean