unzureichend

adjective
  1. Insufficient or inadequate in quantity, quality, or extent to meet a specific need or requirement. adjective
    The evidence provided was unzureichend to support the defendant's claim.
    His explanation was unzureichend, leaving the committee unconvinced.
  2. Not enough to fulfill the demands or expectations of a particular situation. adjective
    The funding was unzureichend for the project's scope.
    Their preparations were unzureichend for the upcoming competition.