lightning fast

The phrase "lightning fast" compares speed to the rapidity of a lightning strike, emphasizing extreme quickness.

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Definition

B2General

(informal, idiomatic)Extremely quick or rapid.

Example

The new internet connection is lightning fast.
She completed the puzzle at a lightning fast speed.

Similar

Terms that have similar or relatively close meanings to "lightning fast":

quick as lightning quick as a flash lightning bolt fast one quick as thought lightning strike in record time blue streak lightning mapper lightning in a bottle high speed blue flash like the wind in the twinkling of an eye blitz out warp speed to the quick lightning rod wire speed