ETYM Old Fren. grevous, grevos, Late Lat. gravosus. Related to Grief.
Causing or marked by grief or anguish; SYN. heartbreaking, heartrending.
Very severe or painful; causing grief or suffering, heinous. grievous bodily harm, Law, crime of inflicting serious physical injury on another person. (abbr. GBH).
atrocious · critical · dangerous · evil · flagitious · grave · heartbreaking · heartrending · heavy · heinous · important · life-threatening · monstrous · of import · serious · severe · sorrowful · weighty