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.
This patient is beyond help now.
The machine is completely broken and in a hopeless state.
お手上げ is a more casual expression meaning 'throwing up one's hands' in defeat, whereas 処置なし is a more formal or clinical assessment of hopelessness.
Standard kanji spelling.
Variant with 無し; less common but valid.
Compound of 処置 (しょち, 'treatment, measures') + なし ('without'), literally 'without treatment/measures', i.e., nothing can be done.