迅速 じんそく
jinsoku

Noun
na-Adjective

1. quick; fast; rapid; swift; prompt; streamlined; expedited; expeditious

間髪 かんぱつ れず、迅速 じんそくかつ的確 てきかく応対 おうたい、畏 おそ ります。
kampatsuo irezu jinsoku katsu tekikakuna ōtai osoreirimasu.
Such an accurate, lightning-quick reply. What can I say?