1. Extremely
   "infernally clever"
   - hellishly

See also: infernal

• expectedness
• expectorant
• expectorate
• expectoration
• expectorator
• expediate
• expedience
• expediency
• expedient
• expediently
• expedite
• expediter
• expedition
• expeditionary
• expeditious
• expeditiously
• expeditiousness
• expel
• expellee
• expeller
• expelling
• expend
• expendable
• expender
• expending