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Jyutping soeng1 cung4 si1 soeng2
Pinyin shuāng chóng sī xiǎng

Definitions (Wiktionary)
  1. noun
    doublethink (holding of two contradictory beliefs in one's mind simultaneously and accepting both of them as true or correct, without realizing the contradiction)
    (syn.) 双想, 雙想