爆発 ばくはつ てき
bakuhatsuteki

na-Adjective

1. explosive

がつまでには爆発 ばくはつ てき消費 しょうひ くだ ざかになるように えた。
kugatsumadeniwa bakuhatsuteki shōhiwa kudarizakani naru yōni mieta.
By September the burst in spending seemed to be tapering off.
na-Adjective

2. sudden and dramatic (of an increase in sales, popularity, etc.); explosive; rapid; abrupt; tremendous