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Synonyms

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

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.

See Examples For:

The letter warns, external cyber-attacks which use AI will become both more widespread and more sophisticated in a matter of months as the technology rapidly improves.

From BBC Aug. 27, 2026

Pulsar Timing Arrays rely on rapidly spinning neutron stars known as pulsars, which act as extraordinarily precise clocks in space.

From Science Daily Aug. 27, 2026

Earlier in our conversation, which veers rapidly across his prolific career, he held up a series of storyboards scrawled on white paper.

From Los Angeles Times Aug. 26, 2026

They also will need to hire and retain the right business minds, especially leaders who can structure the company around a rapidly moving target.

From The Wall Street Journal Aug. 26, 2026

“I’ll see if I can make some extra soap this month,” she said, steam rapidly patterning her forehead with beads of sweat that pooled in the creases of her frown.

From "Flying Through Water" by Mamle Wolo

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