いきなり (translations)→ abruptly beginning bluntly directly fast freely impulsively instant instantly leap new out-of-the-blue outright point-blank pointblank promptly suddenly unannounced violently
そそくさと (translations)→ hastily precipitously quick quickly scurry scuttle uneasily
たちまち (translations)→ already briefly completely immediate immediately instantaneous momentarily rapidly right short soon speedily swiftly
だしぬけ (translations)→ abruptness surprise
だしぬけに (translations)→ surprisingly unexpectedly
と (translations)→ because but eventually if need then when with
とっさの (translations)→ initial momentary unthinking
にわかな (translations)→ disjointed surge
にわかに (translations)→ increasingly
はっと (translations)→ alarm alert automatically dead hurriedly jolt sharply start startle
ふっと (translations)→ fleetingly passing simply softly unsummoned
ふと (translations)→ accidental chance dare inadvertently involuntarily just unbidden
急な (translations)→ emergency steepish
急に (translations)→ begin considerably snap
急激な (translations)→ exponential sharp
思わず (translations)→ instinctively unconsciously unintentionally unwillingly visibly
新しい (translations)→ another different fresh neo- newly other strange young
突然 (translations)→ easily levity until
不意に (translations)→ unscheduled
