Definition of don't-carishness in English:

don't-carishness

(also don't-careishness)

noun

rare
  • The quality of not caring; carelessness, indifference, unconcern.

Origin

Early 19th century; earliest use found in The New Monthly Magazine. From (I) don't care + -ish + -ness.

Pronunciation

don't-carishness

/ˌdəʊntˈkɛːrɪʃnɪs/