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Definitions

speed

[speed] / spid /
NOUN
rate of motion, often a high rate
Synonyms
STRONGEST
acceleration agility momentum pace quickness velocity
STRONG
activity alacrity breeze briskness celerity clip dispatch eagerness expedition fleetness gait haste headway hurry hustle legerity lick liveliness precipitancy precipitation promptitude promptness rapidity rapidness readiness rush rustle snap steam swiftness urgency
Antonyms
STRONG
apathy delay hindrance rest slowing slowness sluggishness stoppage
VERB
move along quickly
Synonyms
STRONGEST
advance boost expedite facilitate fly further hasten help hurry promote quicken ride run rush zoom
STRONG
aid assist barrel belt bomb career dispatch flash gallop hightail impel race sail spring tear urge whiz
WEAK
bowl over cover ground cut along gather momentum gear up get a move on get moving get under way go all out go fast go like the wind lose no time make haste open up throttle press on step on it
Antonyms
STRONGEST
block cease check decrease delay halt hinder hurt obstruct prevent procrastinate rest retard slow stop walk
STRONG
dissuade

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.

As for its limitations in range and charging speed, yes, they’re horrible.

From The Wall Street Journal • Apr. 4, 2026

Bearman's crash in Suzuka has brought to the forefront concerns drivers have been expressing for quite some time - the danger that arises from the significant speed offsets created in races by the new engines.

From BBC • Apr. 3, 2026

This would allow the probe to reduce its speed enough to remain in orbit, rather than simply flying past.

From Science Daily • Apr. 3, 2026

Thailand's government held talks this week on the haze, and some districts in Chiang Mai have issued disaster declarations to help speed up financial support.

From Barron's • Apr. 3, 2026

I breathed a happy sigh, letting my cup of happiness runneth over as the train picked up speed for Chicago.

From "The Detective's Assistant" by Kate Hannigan

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.