GRIEVOUS

adj. 1 severe, heavy, painful, grave, serious, distressing, harmful; damaging, hurtful, acute, wounding The church buildings suffered grievous damage from the storm He was charged with causing grievous bodily harm. 2 egregious, awful, flagrant, terrible, outrageous, heinous, dreadful, atrocious, monstrous, appalling, shocking, deplorable, calamitous, lamentable, intolerable, shameful, unbearable Missing that catch was a grievous error