- that is to be lamented; regrettable; unfortunate: a lamentable decision.
- Rare. mournful.
- wretched, deplorable, or distressing
- an archaic word for mournful
adj.c.1400, from Middle French lamentable and directly from Latin lamentabilis “full of sorrow, mournful, lamentable,” from lamentari “to lament” (see lamentation). Related: Lamentably.