1. In a terrible manner
   - terribly, awfully, abominably, abysmally, rottenly, appallingly, execrably 
2. To an extravagant or immoderate degree
   "atrociously expensive"
   - outrageously

See also: atrocious

• cleavage cavity
• cleave
• cleaver
• cleavers
• clef
• cleft
• cleft foot
• cleft lip
• cleft palate
• cleg
• clegg
• Cleistes
• Cleistes divaricata
• Cleistes rosea
• cleistocarp
• cleistogamic
• cleistogamous
• cleistogamy
• cleistothecium
• clematis
• Clematis baldwinii
• Clematis crispa
• Clematis lasiantha
• Clematis ochreleuca
• Clematis tangutica