1. (adverb) used as intensifiers

• awful
• frightfully
• terribly

2. (adverb) of a dreadful kind

• dreadfully
• horribly

3. (adverb) in a terrible manner

• abominably
• abysmally
• atrociously
• rottenly
• terribly

1. (adverb) of a dreadful kind

• atrocious
• frightful
• horrible
• horrifying
• ugly
• awful
• dire
• direful
• dread
• dreaded
• dreadful
• fearful
• fearsome
• frightening
• horrendous
• horrific
• terrible
• dreadful

2. (adverb) in a terrible manner

• abominable
• abominable
• abominable
• atrocious
• atrocious
• atrocious
• awful
• awful
• awful
• dreadful
• dreadful
• dreadful
• painful
• painful
• painful
• terrible
• terrible
• terrible
• unspeakable
• unspeakable
• unspeakable
• crappy
• icky
• lousy
• rotten
• shitty
• stinking
• stinky