What does "decelerate" mean?
To reduce the velocity of something.
Decelerate
verb
verb ·4 syllables ·Moderate ·College level
Meaning at a glance
- Primary sense: To reduce the velocity of something.
- Grammar: decelerate is listed as verb.
- Nearest alternatives: slow down, slow, arrest, backpedal.
- Useful contrasts: accelerated, accelerated ecological decline, catalytic processing.
- Usage evidence: The US can't decelerate China's rise.
How to use "decelerate"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "decelerate" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "decelerate" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "decelerate" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "decelerate" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "decelerate" is acting as verb in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "slow down" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "decelerate", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Verb
- 1 To reduce the velocity of something. transitive
"In May, for example, the Illinois Central RR. introduced the long-expected streamline version of the Panama Limited, with diesel haulage, cutting the time over the 921 miles between Chicago and New Orleans by 2hr. to 18hr. each way—the fastest on record—but decelerated other trains over the same route."
- 2 reduce the speed of wordnet
- 3 To reduce the rate of advancement of something, such as a disease. transitive
- 4 lose velocity; move more slowly wordnet
- 5 To go slower. intransitive
"One of the disadvantages of increasing intermediate stops is that, as we have pointed out already, certain prestige trains have to suffer, notably the "Cornish Riviera Express", slowed 15min to Plymouth by stops at Taunton and Exeter; the "Torbay Express", decelerated 18min by stops at Reading, Westbury, Taunton and Newton Abbot; and the "Bristolian", which adds 14min in order to allow for a Bath stop and an increased load."
Antonyms
Example
"The US can't decelerate China's rise."
Common questions
What is a synonym for "decelerate"?
Common synonyms include: slow down, slow, arrest, backpedal, backwater, brake.
How do you use "decelerate" in a sentence?
The US can't decelerate China's rise.
Etymology
Late 19th c., from de- + (ac)celerate. Compare deaccelerate.