unlabeled

/ʌnˈleɪbəld/
adjective
  1. Not marked with a label or identifying information.
    • The store sold unlabeled products at a discount because they had no brand stickers.
    • She found an unlabeled jar of spices in the back of the cabinet.
    • The unlabeled boxes in the attic contained old family photos.
  2. Not assigned to a specific category or group; not classified.
    • The artist left the painting unlabeled so viewers could form their own interpretations.
    • The unlabeled data in the spreadsheet made it hard to analyze the results.
    • In the survey, respondents could choose an unlabeled option if none of the categories fit.