Meaning of couldn't-care-less in English:

couldn't-care-less

adjective

informal British
  • Characterized by complete indifference.

    • ‘I started to get irritated by this couldn't-care-less attitude’
    inattentive, incautious, negligent, remiss
    unstudied, artless, casual, effortless, unconcerned, nonchalant, insouciant, languid, leisurely, informal