Word: "in a flash"
Definition: The phrase "in a flash" means something happens very quickly or suddenly, without any delay.
You can use "in a flash" to describe an action or event that occurs almost instantly or in a very short amount of time. It's often used in informal conversations.
In more advanced contexts, you might use "in a flash" to describe not just speed, but also the suddenness of an event. - "The idea came to me in a flash, and I knew exactly what to do." (Here, it emphasizes both the quickness and the suddenness of the idea.)
While "in a flash" primarily refers to speed, "flash" can also refer to a brief appearance or something that is very noticeable for a short time, such as "flashy" clothing, which means very bright and attention-grabbing.
While there isn't a direct phrasal verb that matches "in a flash," you might encounter phrases like "flash by" or "flash out," which describe something moving quickly or appearing suddenly.
"In a flash" is a useful phrase to describe actions that occur very quickly.