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rapidly

American  
[rap-id-lee] / ˈræp ɪd li /

adverb

  1. within a short period of time.

    There are thousands of languages spoken in the world today, but many of them are rapidly approaching obsolescence and extinction.

  2. with great speed; swiftly.

    Bats are more likely than birds to detect rapidly spinning turbine blades and avoid flying into them.


Other Word Forms

Derived Forms

Etymology

Origin of rapidly

rapid ( def. ) + -ly

Explanation

When you do something rapidly, you do it very quickly. A rapidly moving train is going at full speed. You may notice that the grass in your yard grows rapidly during the rainy summer days and more slowly when there's a heat wave. You might also get a speeding ticket for driving too rapidly in a school zone. In either case, something's happening fast. The adverb rapidly comes from the adjective rapid, "moving quickly," with the Latin root rapidus, "hasty, swift, fierce, or impetuous."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Only then, when a small surplus is forecast, can energy inventories that are rapidly depleting be restocked.

From The Wall Street Journal • Jun. 9, 2026

In its initial-public-offering filing, SpaceX said its projected $26.5 trillion AI total addressable market will be “constrained by Earth’s inability to rapidly scale power generation.”

From MarketWatch • Jun. 8, 2026

The market is rapidly growing and it is showing no signs of slowing down.

From BBC • Jun. 6, 2026

Leo's predecessor Francis largely overlooked many of Europe's traditional bastions of Catholicism where, like Spain, religious observance has been falling rapidly.

From Barron's • Jun. 6, 2026

When Steve Eisman stumbled into this new, rapidly growing industry of specialty finance, the mortgage bond was about to be put to a new use: making loans that did not qualify for government guarantees.

From "The Big Short" by Michael Lewis

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