内心 nèixīn heart
heart; innermost being; (maths) incenter
怎么记住“内心”: 内 inside + 心 heart = heart.
汉字
用法
- "Inner heart, innermost feelings" - always about emotion/thought, not the physical heart - 内心的想法 (nèixīn de xiǎngfǎ) one's inner thoughts, 内心深处 deep in one's heart.
- Contrast with 心里 (xīnlǐ), the everyday, more casual way to say "in one's heart/mind" - 内心 is more literary and used in writing or reflective speech.
- Never used for the physical organ - that's 心脏 (xīnzàng).