noun which may take the genitive case particle 'no', noun
hopeless; beyond help; unworkable
Describes a situation, person, or thing that cannot be fixed, saved, or dealt with; often used in medical or problem-solving contexts.
この患者はもう処置なしだ。
This patient is beyond help now.
機械が完全に壊れて処置なしの状態だ。
The machine is completely broken and in a hopeless state.
Compound of 処置 (しょち, 'treatment, measures') + なし ('without'), literally 'without treatment/measures', i.e., nothing can be done.