grim 不吉祥的
Each day, the chance for peace became more  grim.
sinister 不详的 邪恶的 wicked, evil
cruel 残忍的 ferocious, ruthless
The cruel ruler allowed the peasants to  starve.
malevolent 恶意的 malicious, spiteful
malice 恶意 ill will, spite
malicious 心毒的 怀恶意的 vicious, spiteful
Don't listen to those malicious rumors; he  is a good man.
ferocious 凶猛的 fierce, savage, bestial  (feroc凶猛+ious)
The ferocious winter storm buried the roads  in a foot of snow.