1. hideous, horrid, horrific, outrageous

grossly offensive to decency or morality; causing horror

Example Sentences:
'subjected to outrageous cruelty'
'a hideous pattern of injustice'
'horrific conditions in the mining industry'

Synonyms

• hideous
• horrid
• outrageous

2. awful, dire, direful, dread, dreaded, dreadful, fearful, fearsome, frightening, horrendous, horrific, terrible

causing fear or dread or terror

Example Sentences:
'the awful war'
'an awful risk'
'dire news'
'a career or vengeance so direful that London was shocked'
'the dread presence of the headmaster'
'polio is no longer the dreaded disease it once was'
'a dreadful storm'
'a fearful howling'
'horrendous explosions shook the city'
'a terrible curse'

Synonyms

• awful
• dire
• direful
• dread
• dreaded
• dreadful
• fearful
• fearsome
• frightening
• horrendous
• terrible