Synonyms to lightning speed

air speed, celerity, dispatch, expedition, fastness, flight, flit, flurry, ground speed, haste, hurry, instantaneousness, knots, miles per hour, precipitation, promptitude, promptness, quickness, rapidity, round pace, rpm, rush, shock wave, snappiness, sonic barrier, sonic boom, sound barrier, speed, speed of sound, speediness, swift rate, swiftness, velocity, alacrity, bat, briskness, expeditiousness, gait, hustle, legerity, pace, rustle, accelerate, accomplish, accomplished fact, accomplishment, account, achieve, achievement, acknowledgment, acquaintance, address, administration, advice, agility, air-express, airfreight, airmail, annihilate, announcement, answer, assassinate, assassination, attain, attainment, bane, bereave of life, billet, blood, bloodlet