causing grief or great sorrow

grievous news.

flagrant; outrageous; atrocious

a grievous offense against morality.

full of or expressing grief; sorrowful

a grievous cry.

burdensome or oppressive.

causing great pain or suffering

arrested for causing grievous bodily harm to someone in a bar.

adjective

good , harmless , pleasant

adjective

afflicting , agonizing , appalling , atrocious , calamitous , damaging , deplorable , dire , dismal , disquieting , distressing , disturbing , dreadful , egregious , flagrant , glaring , grave , harmful , heart-rending , heavy * , heinous , hurtful , injurious , intolerable , lamentable , monstrous , mournful , offensive , onerous , oppressive , outrageous , pathetic , pitiful , sad , shameful , sharp , shocking , sorrowful , taxing , tough , tragic , troublesome , unbearable , upsetting , villainous , weighty * , wounding , doleful , dolorous , regrettable , rueful , woeful , dangerous , serious , severe , afflictive , bitter , burdensome , flagitious , intense , nefarious , painful , plaintive , sore , sorry