Synonyms to instantaneousness

air speed, celerity, dispatch, expedition, fastness, flight, flit, flurry, ground speed, haste, hurry, knots, lightning speed, 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, abruptness, acquiescence, agility, agreeability, agreeableness, amenability, animation, anxiety, anxiousness, appetite, ardor, avidity, avidness, breathless impatience, briskness, cheerful consent, cheerful readiness, compliance, consent, cooperativeness, decisiveness, docility, eagerness, elan, enthusiasm, expeditiousness, favorable disposition, favorableness, fervor, feverishness, forwardness, furiousness, gameness, goodwill, gust, gusto, hastiness, heartiness, hurriedness, immediacy, immediateness, impatience, impetuosity, impetuousness, impulsiveness, keen desire, keenness, life, liveliness, nimbleness, pliability, pliancy, precipitance, precipitancy, precipi