(a cause of) sadness or regret
extreme upset, grief
Cases of word usage
1) (used to express sorrow or regret) (alas)
2) filled with, showing, deep sorrow for having done wrong (contrite)
3) (a cause of) great pain, discomfort or sorrow (distress)
4) deep or great sorrow (grief)
5) exaggerated expression of anxiety, sorrow etc (heroics)
6) to feel, show, sorrow or regret (mourn)
7) sorrow and regret (for doing wrong, sin) (penitence)
8) any kind of evergreen tree with needle-shaped leaves (pine-needles) and cones (pine-cones); to waste away because of sorrow or illness (pine)
9) a feeling of sorrow for the troubles, sufferings etc of another person (pity)