1. ruah lopi ah duak ti i a hung ummi; e.g. His going was very sudden = A kal cu ruah lopi ah a si; e.g. The sudden pitch of the ship knocked him off his feet = Tilawng duak tiah a ttum a kai caah a ke a phlelh i a tlu;
2. chikkhatte ah tuahmi;
all of a sudden = ruah lo piin