The kanji 嘆 (pronounced *tan* in On-yomi) primarily conveys the meaning of "sigh," "lament," "grieve," or "exclaim in sorrow." It represents a deep emotional response, typically associated with sadness, sorrow, or regret. It can also imply admiration or surprise, depending on the context.

・On-yomi (音読み): *tan* タン ・Kun-yomi (訓読み): *nageku* なげく

⚫︎嘆息 Translation: Sigh; lamentation. ⚫︎感嘆する Translation: To be deeply moved; to admire; to exclaim in wonder. ⚫︎悲嘆にくれる Translation: To be overwhelmed with grief; to be plunged into despair.

The kanji 嘆 is a *形声文字 (keisei moji)*, a phono-semantic compound character. The left side, 口 (kuchi), is the radical meaning "mouth". The right side, 難 (nan), provides the phonetic component. The combination suggests the act of speaking or expressing emotions (mouth) in a way that is difficult or painful (suggested by the meaning of 難). The character evolved to represent the act of sighing, lamenting, or expressing sorrowful feelings.