Definition of don't-care in US English:

don't-care

adjective

  • That shows that one does not care; careless, reckless, unconcerned.

noun

  • A person who does not care; a careless, unconcerned, or indifferent person.

Origin

Mid 19th century; earliest use found in Catherine Sedgwick (1789–1867). From (I) don't care: see care.

Pronunciation

don't-care

/ˈdəʊntˌkɛː/