Note that 昔 has meaning of “past, ending”, hence connotations of “feelings for the past, feeling about an ending – regret, rue”.
- KangXi: page 391, character 11
- Dai Kanwa Jiten: character 10814
- Dae Jaweon: page 725, character 23
- Hanyu Da Zidian: volume 4, page 2313, character 9
- Unihan data for U+60DC
惜 (Yale sik1)