speedily (adv.)

• amain
• apace
• cursorily
• decisively
• directly
• expeditiously
• fast
• feverishly
• forthwith
• furiously
• hastily
• helter-skelter
• hotfoot
• hurriedly
• immediately
• instantly
• pell-mell
• post
• promptly
• pronto
• quick
• quickly
• rapidly
• slapdash
• smartly
• straightaway
• straightway
• summarily
• superficially
• swiftly
• trippingly