all of a sudden

• Expressão idiomática que significa 'de repente' ou 'inesperadamente', usada para descrever algo que acontece sem aviso prévio ou em um curto espaço de tempo.

An idiomatic expression meaning 'suddenly' or 'unexpectedly', used to describe something that happens without warning or in a very short amount of time.

1. Unexpectedly or quicklyA2informal

   Happening without warning or preparation; suddenly.

   De repente

   • All of a sudden, the lights went out.
   • She started crying all of a sudden.
   • All of a sudden, the dog began barking loudly.