さっさと
sassato

Adverb

1. quickly; promptly; immediately; without delay; briskly; hurriedly; hastily

Onomatopoeia
さっさと宿題 しゅくだいをしなさい。
sassato shukudaio shinasai.
Do your homework without delay.
Adverb

2. indifferently; coldly

Onomatopoeia
Other forms: