1) Abruptly 2) Apace 3) Full sail 4) Hurriedly 5) Immediately 6) In nothing flat 7) Lickety split 8) Likewildfire 9) Presto 10) Quickly 11) Soon 12) Speedily 13) Suddenly 1) Apace 2) At a clip 3) Chop-chop 4) Fast 5) Hastily 6) How the express travels 7) How the Niagara flows 8) Hurriedly 9) Quickly 10) Speedily 11) Swiftly 12) Very quickly 13) With rapid movements 14) With speed 
• (adv.) In a rapid manner.
Moving at 35 to 45 knots
Rap'id·ly (răp'ĭd*lȳ) adverb In a rapid manner. 
rapidly 1. A reference to fast movements. 2. With great speed, celerity, or velocity; swiftly. 3. With quick progression; such as, to run rapidly; to grow or to improve rapidly. 4. With fast utterance; such as, to speak rapidly.