あっというまに (translations)→ fast quicksilver rapidly
あっという間に (translations)→ instantly quickly swiftly
あわただしく (translations)→ fly hastily hurry restively
さっさと (translations)→ abruptly briskly directly early just promptly pronto quick simply soon thoughtlessly
さっそく (translations)→ present right straight very
すかさず (translations)→ already automatically simultaneously smoothly
すぐ (translations)→ close closely dutifully easily easy first instantaneously minute now presently quite then willingly
すぐさま (translations)→ immediate instant
すばやく (translations)→ briefly cursorily deftly hasty sharp sharply speedy
そこへ (translations)→ before till
そのまま (translations)→ consequently continue docile exact frankly keep let originally perfectly plain remain same there unconsciously whole
その場で (translations)→ synchronous
たちどころに (translations)→ overnight urgently
たちまち (translations)→ completely instantaneous momentarily outright short speedily sudden
たちまちのうちに (translations)→ sight
だしぬけに (translations)→ impulsively surprisingly unexpectedly
とたん (translations)→ as moment until when
とたんに (translations)→ inevitably noticeably
まっすぐ (translations)→ dead erect hard slap steadily upright
みるみるうちに (translations)→ increasingly rapid
一も二もなく (translations)→ readily
一挙に (translations)→ entirely head-on infinitely significantly unreasonably
急いで (translations)→ hurriedly smartly swift
急に (translations)→ begin considerably snap
即座に (translations)→ automatic impromptu
待ってましたとばかり (translations)→ happily keenly merrily
大急ぎで (translations)→ amain feverishly
大至急 (translations)→ ASAP straightaway
直接 (translations)→ independent onesef personally see
反射的に (translations)→ gut instinctively involuntarily reflectively
