Synonyms for Grievous:
disastrous, adverse, opposing, antipathetic, unfriendly, unfavorable, detrimental, perilous, troublesome, unpropitious, burdensome, unlucky, woeful, calamitous, distressful, tragic, untoward, catastrophic, inauspicious, difficult, unfortunate, miserable, hard.
grave, severe, serious, dangerous.
disagreeable, grueling, miserable, offensive, distressful, bitter, biting, uncomfortable, insufferable, anguishing, wrenching, excruciating, horrendous, acute, Cramping, severe, Besetting, arduous, stabbing, odious, irritating, oppressive, agonizing, annoying, woeful, smarting, crushing, hurtful, trying, Irksome, sore, bothersome, stinging, Torturing., troublesome, inflaming, piercing, tormenting, aching, withering, aggravating, cutting, chafing, harrowing, Gnawing, painful, throbbing, sharp, unpleasant, unbearable, burdensome, cruel.
•severe, painful; serious (adjective)
flagrant, weighty, oppressive, grave, sharp, hurtful, disturbing, troublesome, unbearable, tragic, agonizing, offensive, deplorable, dismal, upsetting, sorrowful, calamitous, heinous, sad, outrageous, villainous, pathetic, disquieting, lamentable, dire, heavy, monstrous, mournful, atrocious.
n.dire, rigorous, extreme, desperate. help. •atrocious (noun)
outrageous, villainous, flagrant.
disturbing, upsetting, disquieting.
heinous, atrocious, monstrous, critical, weighty, heavy, heartrending, heartbreaking, of import, grave, flagitious, serious, sorrowful, evil, important, severe, wicked, dangerous.
pathetic, sad, dismal.
lamentable, regrettable. deplorable, rueful. mournful. doleful, sad. •mournful
•Other relevant words:
outrageous, flagitious, critical, villainous, heavy, desperate, weighty, sad, serious, sorrowful, regrettable, disquieting, heartrending, wicked, grave, disturbing, sharp, important, extreme, lamentable, upsetting, pathetic, doleful, dismal, monstrous, atrocious, rueful, dolorous, of import, flagrant, evil, heinous, heartbreaking, dangerous, deplorable, mournful, dire.