纏綿悱惻

1. • sad beyond words (idiom)

     of a person

2. • poignant

     of music, literature etc

3. • very sentimental

Character by character

• 纏(chán)wind around
• 綿(mián)silk floss
• 悱(fěi)want to articulate one's thoughts but be unable to
• 惻(cè)sorrowful