This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. That causes great grief, anguish or distress

adj. That elicits deep sympathy

adj. Causing intense grief; overpowering with anguish; very distressing.

Overpowering with anguish; deeply afflictive; very distressing.

adj. causing or marked by grief or anguish

"Stunning, charming, and heartrending is Michel Gagné's opening number, "Underworld," an entirely wordless piece about a brave little fox."

sorrowful   

distressing   

piteous    heartbreaking    anguished    heartbroken    heartfelt    direst    long-drawn    lamentable    harrowing    agonize