あっさりと (translations)→ airily artlessly cool deadpan eagerly fast flatly just matter-of-factly
さっさと (translations)→ abruptly directly early immediately promptly pronto quick quickly simply soon thoughtlessly
さっと (translations)→ brief briefly casually effectually fling instantly lightly rapidly severely sharp sharply suddenly swiftly swing whisk
せかせかした (translations)→ busy restless
せかせかと (translations)→ busily hastily jauntily nervous nervously urgently
せわしなく (translations)→ constant energetically hurriedly impatiently madly restlessly
てきぱきと (translations)→ brisk expertly promptness rapid
一気に (translations)→ mouthful single through vigorously
邪慳に (translations)→ mercilessly roughly
勢いよく (translations)→ determinedly emphatically furiously hard merrily smartly
きっぱりと (translations)→ categorically confidently decidedly decisively definitely firm firmly point blank pointedly positively tersely unequivocally