痴心 chīxīn infatuation
How to remember 痴心: 痴 foolish + 心 heart = infatuation.
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How it is used
- Devoted, lovesick infatuation - 一片痴心 (yí piàn chīxīn) utter devotion; 痴心妄想 (chīxīn wàngxiǎng) wishful fantasy.
- Usually romantic single-minded devotion, admiring or pitying; the person can't let go of their feelings.
- 痴心妄想 is a common set phrase mocking someone's hopeless daydream; 痴 here is besotted, not stupid.