all of sudden

突然。※口頭ではsuddenlyより使われる

Ex

  • She’s ignoring me all of sudden.
  • All of sudden, people started running away.

Reference source

  • http://xn--6oqqk959cr20al3h.xn--ccks5nkbz150dj5j.net/phrases/all_of_a_sudden.html
  • http://native-phrase-blog.com/all-of-a-sudden-:突然/