1. (a.) Causing grief or sorrow; painful; afflictive; hard to bear; offensive; as, a grievous error in judgment\.

2. (a.) Characterized by great atrocity; heinous; aggravated; flagitious; as, a grievous sin.

3. (a.) Full of, or expressing, grief; showing great sorrow or affliction; as, a grievous cry.

abominable acute affecting afflictive aggrieved anguished appalling arrant atrocious awful base beastly beneath contempt bitter black blameworthy bleak brutal burdensome calamitous careworn cataclysmal cataclysmic catastrophic cheerless comfortless contemptible damaging dangerous demanding deplorable depressing depressive despicable destructive detestable dire disastrous discomforting disgusting dismal dismaying distasteful distressful distressing doleful dolorific dolorogenic dolorous dreadful dreary dumb with grief egregious enormous exacting exigent fatal fell fetid filthy flagrant foul fulsome galling grave grief-stricken griefful grieved gross harmful hateful heartbreaking heartrending heavy heinous horrible horrid hurtful in grief infamous intolerable joyless lamentable loathsome lousy lugubrious major monstrous mournful moving nasty nefarious noisome notorious obnoxious odious offensive oppressive outrageous painful pathetic piteous pitiable pitiful plaintive plangent plunged in grief poignant rank regrettable reprehensible repulsive rotten rueful ruinous sad saddening scandalous schlock scurvy serious severe shabby shameful sharp shocking shoddy sordid sore sorrowed sorrowful sorrowing squalid superincumbent taxing tearful terrible too bad touching tough tragic ugly unbearable unclean uncomfortable unfortunate unpalatable vile villainous weighty woebegone woeful worst worthless wounding wreckful wretched