Definitions

rapid

[rap-id] / ˈræp ɪd /

ADJECTIVE

very quick

Synonyms

STRONGEST

accelerated breakneck brisk expeditious fast hasty speedy swift

STRONG

active express fleet flying precipitate prompt ready screaming

WEAK

agile double-time expeditive fleet of foot hurried in nothing flat light-footed like a house on fire lively mercurial nimble on the double quick as a wink quickened really rolling split-second spry winged

Antonyms

STRONGEST

delayed slow sluggish tardy

WEAK

languishing leisurely slack

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.

Rapid expansion has been a hallmark of the Wende of late.

From Los Angeles Times • May 10, 2026

Rapid gains in artificial-intelligence technology are bringing new competitors into the border-security business.

From The Wall Street Journal • May 8, 2026

Rapid progress in large language models and multi-agent systems has made it possible for a single operator to manage vast networks of AI "voices."

From Science Daily • Apr. 20, 2026

Defence minister John Healey told parliament the country would be deploying its Rapid Sentry anti-drone system to Kuwait.

From Barron's • Mar. 23, 2026

Rapid movement was a relief in the midst of so much feeling.

From "Ella Enchanted" by Gail Carson Levine

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