(bound form) To exhale deeply to express sadness, frustration, or exhaustion; to sigh. Often used in 叹气 tàn​qì.

(bound form) to pity; to feel sorry for someone or something, as in 可惜 kě​xī or 痛惜 tòng​xī

(bound form) To exclaim or cry out in admiration, surprise, or praise. Often used in 赞叹 zàn​tàn.

(bound form) to cherish; to value highly; to take care of tenderly, as in 珍惜 zhēn​xī or 爱惜 ài​xī