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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
on hour
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "on hour" is not correct in standard written English.
The correct expression is "in an hour" or "in one hour," which indicates a time frame of one hour from the present moment. Example: "I will finish my work in an hour."
⚠ May contain grammatical issues
News & Media
Science
Wiki
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
26 human-written examples
The two stubborn teams played on, hour after hour, pitcher after pitcher, until finally, in the bottom of the 18th inning, the greatest relief pitcher of them all entered the fray.
News & Media
"There's no way it's still — " "You really can't do this one little thing?" "This is my fault?" "I'm on hour twenty-nine of my shift here".
News & Media
"I'd love to win Roubaix," he confirmed, "[get] up there next year, and off the back of that focus on Hour Record, really invest in that, get the most out of that one attempt, [it will] give me something to do next year".
News & Media
Construction of parking garages would discourage parking along with minimum parking time of on hour only.
News & Media
He was given the limited role of pastor of the local congregation, and removed from preaching on "Hour of Power".
News & Media
Contracts at Ford and Chrysler were extended, while the union agreed to keep the G.M. contract in place on hour to hour.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
34 human-written examples
Some vowels sound very different: my and thy become me and thee; tion, as in commotion, becomes commo-see-on; hour sounds like oar -- or whore, which made one of Shakespeare's puns suddenly make sense.
News & Media
By the appointed power-on hour, I have four pages of scribbled notes waiting to be typed up.
News & Media
Leave on for one hour.
Wiki
Open-fronted showrooms give visitors a glimpse at the chocolate-making process, or for total immersion call ahead (519-634-600) thejoin the hands-on, hands-ong workshops and take home the fruits of your labour.
News & Media
"It was hour-on-hour coverage of the fact that a few cars had been destroyed and some broken windows," she says comparing it to the reporting on Bony, who had spent the weekend in a hospital.
News & Media
Expert writing Tips
Best practice
When referring to a duration of sixty minutes, use "in an hour" or "for an hour" to ensure grammatical correctness.
Common error
Avoid using "on" to indicate a duration. "On" is typically used with specific days or dates. Instead, use "in" or "for" when referring to time spans, for example, "I will be there in an hour" or "The meeting lasted for an hour."
Source & Trust
83%
Authority and reliability
2.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "on hour" is generally used as a prepositional phrase, intending to specify a duration. However, as Ludwig AI indicates, the correct form requires either the article "an" or the preposition "for" to be grammatically sound. The examples provided often use "on hour" as part of larger phrases, highlighting the need for correction.
Frequent in
News & Media
35%
Science
35%
Wiki
15%
Less common in
Formal & Business
5%
Academia
5%
Reference
5%
Ludwig's WRAP-UP
The phrase "on hour" is generally considered grammatically incorrect in standard English. As Ludwig AI reports, the correct forms are "in an hour" or "for an hour", depending on the intended meaning. While "on hour" appears in various sources, including news, science, and wikis, its usage is often part of larger phrases where correction is needed. To avoid errors, use "in an hour" to indicate a future time and "for an hour" to indicate a duration. Correcting this phrase will enhance clarity and credibility in your writing. Using alternatives such as "within the hour" or "hourly" might also be helpful.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
in one hour
Specifies a duration of one hour from the present.
for an hour
Indicates a duration of one hour.
within the hour
Indicates something will happen before the end of the current hour.
hourly
Refers to something that happens every hour or is based on an hour.
every hour
Indicates something happens each hour.
each hour
Similar to "every hour", indicating a recurring event.
at the top of the hour
Refers to the beginning of an hour (e.g., 1:00 PM).
one hour duration
Explicitly states the length of time is one hour.
one-hour period
Refers to a specific period of sixty minutes.
a single hour
Emphasizes the singularity of a one-hour timeframe.
FAQs
What is the correct way to refer to a period of 60 minutes?
The correct way is to say "in an hour" or "for an hour". Avoid using "on hour" as it is grammatically incorrect. For example, say "I will finish this "in an hour"" instead of "I will finish this on hour".
What are some alternatives to "in an hour"?
You can use phrases like "within the hour", "after one hour", or simply "hourly" depending on the context. For instance, "The report will be ready "within the hour"" or "We update the data hourly".
How do I use "hourly" correctly in a sentence?
"Hourly" is an adjective or adverb that means "every hour" or "based on hours". Example: "The employees are paid "hourly"" or "The bus service runs hourly".
Is there a difference between "in an hour" and "for an hour"?
Yes, "in an hour" indicates a point in the future (e.g., "I'll leave "in an hour""), while "for an hour" indicates a duration (e.g., "I worked "for an hour"").
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
2.1/5
Expert rating
Real-world application tested