Find Antonyms

slow Antonyms

Opposite of slow

Because the opposite of slow shifts with each meaning, the 46 antonyms and opposite words below are separated across 7 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Moving, operating, or happening at a low speed; taking a relatively long time to cover a distance or complete an action.

Usage Example

"The heavy rain caused a fast commute into the city center this morning."

Strongest
fast
quick
rapid
speedy
swift
Strong
brisk
hasty
hurried
fleet
express

• verb (Context 2)

To reduce one's speed, or to cause something or someone to move or proceed at a lower speed.

Usage Example

"The freight train began to speed up as it approached the rural station."

Strongest
speed up
accelerate
quicken
Strong
hasten
expedite
hurry

• adverb (Context 3)

At a low speed; in a slow or unhurried manner.

Usage Example

"Drivers are advised to go fast when navigating the icy mountain roads."

Strongest
fast
quickly
rapidly
swiftly
speedily
Strong
briskly
hastily

• verb (Context 4)

To become less active, intense, or productive (especially of an economy, market, or process).

Usage Example

"Housing construction tends to boom during the colder winter months."

Strongest
boom
pick up
surge
accelerate
Strong
soar
expand
thrive

• adjective (Context 5)

Lacking liveliness, excitement, or brisk activity; slack or quiet in business or entertainment.

Usage Example

"Restaurants often experience a busy period during the middle of the afternoon."

Strongest
busy
brisk
lively
bustling
Strong
hectic
active
booming
vibrant

• adjective (Context 6)

Not prompt to understand, think, or learn; lacking mental agility or quickness of perception.

Usage Example

"He was initially quick to grasp the complex calculus concepts, but his persistence paid off."

Strongest
quick
quick-witted
sharp
bright
clever
smart
Strong
intelligent
astute
perceptive
apt

• adjective (Context 7)

Showing a time earlier than the actual or official time (of a clock or watch).

Usage Example

"I missed the train because my wristwatch was five minutes fast."

Strongest
fast
ahead
Strong
early

Similar words to slow

Words similar to slow shift depending on context. Common synonyms include:

slowly
slow down
slow-moving
decelerate
slow-witted
quiet
slack
sluggish
See all synonyms of slow

Cite this Entry


Wordmom. (2026). Antonyms for Slow. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/slow
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