I suddenly tripped on my TOES and fell into the mouth of a cave, landing on an upturned fork. Ouch.
|唐突 な or に||
sudden AND unrelated to whatever came before it. Similar to 急に and 突然, but it emphasizes a random change, emphasizes that there is no cause-and-effect relationship. In other words, 唐突 is not just a sudden guy jumping out from behind a bush or a sudden thunderstorm. 唐突 is more like someone apropos of nothing changing the topic of conversation or getting mad for no apparent reason.
Drink WATER for your health.
The cops MOVE to arrest you.
He said something suddenly with his MOUTH.