Definition

Adverb: Very quickly; almost instantly; without any perceptible delay.

Usage

This adverb is used to describe an action or event that happens with extreme speed, often so fast it seems immediate. It emphasizes the suddenness and brief duration of an occurrence.

Examples

• The magician made the coin disappear in a flash.
• The weekend went by in a flash.
• He understood the complex problem in a flash.

Advanced Usage

• Figurative Use for Time Perception: Often used to describe how a period of time feels subjectively very short, even if it was objectively longer.
  • My years at university passed in a flash.
• Emphatic Positioning: Can be placed at the beginning or end of a clause for emphasis.
  • In a flash, the solution came to her.
  • The car was gone, in a flash.

Variants and Related Words

• Flash (n.): A sudden, brief burst of light or a very short period of time.
  • A flash of lightning illuminated the sky.
• Flash (v.): To shine brightly and suddenly, or to appear suddenly.
  • The camera flashed.
• In a heartbeat: (Idiom) A synonym emphasizing an immediate, willing response.
  • I'd help you again in a heartbeat.

Synonyms

• Instantly
• Immediately
• Instantaneously
• In an instant
• In a split second
• In the blink of an eye

Antonyms

• Gradually
• Slowly
• Eventually
• After a while

Related Idioms and Phrases

• Quick as a flash: Functionally identical in meaning to "in a flash," often used to describe a person's speedy reaction.
  • She answered the question quick as a flash.
• In a jiffy: (Informal) Meaning very soon or quickly.
  • I'll be back in a jiffy.

Adverb

1. without any delay
   • he was killed outright