Rev is a word used in engines and mechanics. It can mean the speed of rotationthe spinning movement around a central point or axis of a motora machine that produces power to move something, or it can mean to make an engine run faster by increasing its revolutionscomplete turns made by a spinning object in one minute.
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.
Pronunciation
AI-generated pronunciation audio (OpenAI).
Accent: General American English
IPA: /rɛv/
Easy pronunciation: REV (approximate spelling).
Stress: One syllable, so it is fully stressed.
Noun meaning the rate of rotation of an engine, especially revolutions per minute.
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.
Rev Meaning
how fast an engine is spinning
Part of speech: noun
Definition: the rate at which a motor or engine is turning, especially measured in revolutions per minute
Example: The engine was doing 6,000 revs.
Synonyms for this meaning:
- revolutions per minute — Works as a direct technical equivalent for engine speed.
- rpm — Common abbreviation for revolutions per minute.
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.
Other Meanings of Rev
Meaning 2
to make an engine run faster
Part of speech: verb
Definition: to increase the number of revolutions per minute of an engine
Example: He revved up the engine before pulling away.
Synonyms for this meaning:
- rev up — Direct verb equivalent for making an engine run faster.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.
Rev Synonyms
Similar Meaning
- revolutions per minute
- rpm
to increase the number of revolutions per minute of an engine
- rev up
Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.
Common Mistakes
- Rev as a noun about engine speed is not the same as rev as a verb.
- RPM is a measure or abbreviation, not a general synonym for every meaning of rev.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.
Frequently Asked Questions
What does rev mean in an engine?
It usually means the engine’s speed of rotation, often measured in revolutions per minute (rpm).
What is a rev in simple English?
A rev is how fast an engine is spinning, or the act of making an engine spin faster.
Is rev a noun or a verb?
It can be both: a noun for engine speed, and a verb meaning to make an engine run faster.
Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-14. AI assessment; not a guarantee of accuracy.