がぜん【×俄然】
all of a sudden ⇒とつぜん（突然）彼はが然挑戦的になったHe suddenly became very aggressive.
にわか【×俄】
〔突然なこと〕にわかに suddenlyにわかの変化a sudden changeにわかの事で驚いたIt surprised me, as I had not expected it.一天にわか...
にわかあめ【×俄雨】
a showerにわか雨が降ってきたIt began to rain suddenly.にわか雨にあったWe were caught in a shower.
にわかきょうげん【×俄狂言】
(a) farce (which developed from impromptu comical skits by amateurs)
