漠不關心

漠不关心
mòbùguānxīn
  1. not the least bit concerned
  2. completely indifferent

CEDICT

unconcerned; indifferent; apathetic

Wiktionary

漠，冷淡。漠不關心指冷冷淡淡，毫不關心。

重編國語辭典

態度冷淡，毫不關心

維基詞典

Entry Composition

1 漠 mò
  1. desert
  2. unconcerned
2 不關 bùguān to have nothing to do with something
3 心 xīn
  1. heart
  2. mind
  3. intention
  4. center
  5. core

classifiers: 顆, 個