What is a 3 letter name for lament?

There isn't a common 3-letter word for lament. "Lament" itself is a very specific word with no easy 3-letter synonym.

However, you could use a 3-letter word to describe the *feeling* of lament:

* Sad: This captures the emotional core of lament.

While not a direct synonym, it captures the essence of a lament in a concise way.