full tilt (?.)

• actively
• all out
• allegretto
• allegro
• animatedly
• breezily
• briskly
• energetically
• expeditiously
• flat-out
• hastily
• in full swing
• lickety-split
• lively
• posthaste
• quickly
• rapidly
• speedily
• spiritedly
• sprightly
• swiftly
• vivaciously