Mournful Wail is a phrase that describes a sound of deep sorrow and grief. It is often used to express feelings of sadness and despair. YOWL and ALAS are two words that can be used to describe this sound. YOWL is an expression of loud, prolonged, and mournful cries or wails, while ALAS is an exclamation of sorrow, regret, or distress. Together, these two words can be used to accurately portray the sound of a Mournful Wail.