Characters
- 心 (心): heart; mind; intention; center; core; CL:顆|颗[ke1],個|个[ge4]
- 照 (炤): variant of 照[zhao4]; to shine; to illuminate
- 不 (不): no; not so; (bound form) not; un-
- 宣 (宣): surname Xuan
Resources
- Wiktionary: 心照不宣
- MDBG: 心照不宣
- Examples with 心照不宣 on Tatoeba
Examples
他们俩彼此心照不宣。