1. (adjective) causing fear or anxiety by threatening great harm

• dangerous
• grave
• life-threatening
• serious
• severe

2. (adjective) causing or marked by grief or anguish

• heartbreaking
• heartrending

3. (adjective) of great gravity or crucial import; requiring serious thought

• grave
• heavy
• weighty

4. (adjective) shockingly brutal or cruel

• atrocious
• flagitious
• monstrous

1. (adjective) causing fear or anxiety by threatening great harm

• critical

2. (adjective) causing or marked by grief or anguish

• sorrowful

3. (adjective) of great gravity or crucial import; requiring serious thought

• important
• of import

4. (adjective) shockingly brutal or cruel

• evil

1. (adjective) causing fear or anxiety by threatening great harm

• badness
• severeness
• severity
• dangerousness
• distressfulness
• seriousness

2. (adjective) of great gravity or crucial import; requiring serious thought

• graveness
• graveness
• gravity
• gravity
• soberness
• soberness
• sobriety
• sobriety
• somberness
• somberness
• sombreness
• sombreness
• weight
• weight
• weightiness
• weightiness

3. (adjective) shockingly brutal or cruel

• atrociousness
• atrociousness
• atrocity
• atrocity
• barbarity
• barbarity
• barbarousness
• barbarousness
• heinousness
• heinousness
• atrocity
• inhumanity
• demon
• devil
• fiend
• monster
• ogre
• monstrosity