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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.

He vowed to eradicate homelessness and rough sleeping "once and for all", to overhaul planning to speed up decisions and to improve energy efficiency in people's homes.

From BBC • Apr. 13, 2026

The dizzying speed of Langley’s rise has taken a toll; in August, she posted on Instagram that she was “more run down than ever” and needed time off to rest.

From The Wall Street Journal • Apr. 13, 2026

"Cutting your speed by about 10%, by driving more smoothly, you can save about 10% of your fuel, so it's certainly worth doing," he said.

From BBC • Apr. 13, 2026

The team exposed yeast cells to shock waves reaching 5.6 times the speed of sound.

From Science Daily • Apr. 12, 2026

However, you’ll recall that Clare was now traveling toward the heart of an open realm, and his speed was amplified by the pull of Progress.

From "The Undead Fox of Deadwood Forest" by Aubrey Hartman

Vocabulary lists containing speed

Word Generation Science - Measurement

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Conservation of Energy and Energy Transfer - Introductory

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Force and Motion (Mechanics) - Middle School

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!