Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
i was sleep
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "i was sleep" is not correct in written English.
The correct form should be "I was asleep." You can use this phrase to indicate that you were in a state of sleep at a certain time in the past. Example: "When you called me last night, I was asleep and didn't hear the phone ring."
⚠ May contain grammatical issues
News & Media
Alternative expressions(4)
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
5 human-written examples
"But what I hadn't accounted for was that I was sleep deprived.
News & Media
In short, I realised that controlled crying looked like the worst thing in the world when I was sleep deprived myself, and a perfectly reasonable compromise when baby and I had both spent a nice night in our beds.
News & Media
Not long after the brainteasing blockbuster "Inception" arrived in theatres, he said that his favorite review of it was a Twitter post from the rapper Slim Thug: "It was too complicated for me it's about having dreams while u are dreaming and I missed parts cause I was sleep so I was lost".
News & Media
While I was sleep deprived, over-caffeinated and working such long hours that I perpetually looked as if I needed a lie down in a darkened room, I imagined that life would continue in much the same way, with us moving out of London in a few years, working, seeing friends, going on holidays and then retiring.
News & Media
"I was sleep deprived and racking up credit card debt.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
I was sleep-reading... again.
News & Media
I was sleep-deprived and not exercising".
News & Media
"I was sleep-deprived," said Senator Clinton about her lapse of memory about sniper fire, "and I misspoke".
News & Media
"I was sleep-deprived because I was working so hard to keep up with my workload and I was in so much pain," he said.
News & Media
"I thought I was sleeping.
News & Media
"I was sleeping," he said.
News & Media
Expert writing Tips
Best practice
When describing a past action, use verb form 'sleeping', for example 'I was sleeping when you called me'
Common error
Avoid using "sleep" directly after "was". "Sleep" is a noun. The correct form is using "asleep" which is an adjective. For example, it is incorrect to say, "I was sleep all day". Instead, use "I was asleep all day".
Source & Trust
89%
Authority and reliability
1.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "i was sleep" functions as an incorrect attempt to describe a state of being. It tries to use the noun "sleep" as an adjective, which is grammatically invalid. Ludwig AI confirms that the correct form should be "I was asleep".
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "i was sleep" is grammatically incorrect. According to Ludwig, the correct phrasing is "i was asleep". This is because "sleep" is a noun, and "asleep" is the adjective that describes the state of being in sleep. While "i was sleep" appears in some informal contexts, it's best to avoid it in both formal and informal writing. Using "i was sleeping" describes the action of sleeping, while "i was asleep" describes the state of being asleep. There are various other alternatives to "i was sleep" such as "I had fallen asleep" or "I was napping" depending on the context.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
i was asleep
Corrects the grammatical structure to use the adjective "asleep" instead of the noun "sleep".
i had fallen asleep
Indicates the completion of falling asleep before a certain point in time.
i was in a state of sleep
More formal way to describe being asleep, emphasizing the condition.
i had dozed off
Implies a light sleep or nap.
i was napping
Describes a short period of sleep during the day.
i was resting my eyes
Suggests a brief period of rest, possibly without fully falling asleep.
i was catching some z's
Informal way of saying "i was sleeping".
i was out like a light
Implies a very deep and sudden sleep.
i was dead to the world
Indicates a very deep sleep where one is unaware of surroundings.
i was in slumber
A more poetic or literary way to express being asleep.
FAQs
What is the correct way to say "i was sleep"?
The correct way to say "i was sleep" is "i was asleep". The word "asleep" is an adjective that describes the state of being in sleep.
Can I use "sleep" as an adjective?
No, "sleep" is a noun. To describe someone being in a state of sleep, you should use the adjective "asleep". For example, say "I am asleep", not "I am sleep".
What's the difference between "i was sleeping" and "i was asleep"?
"I was sleeping" describes the action of sleeping. "I was asleep" describes the state of being in sleep. For example, "I was sleeping when the phone rang" means I was in the process of sleeping. "I was asleep and didn't hear the phone ring" means I was in a state of sleep and therefore didn't hear it.
What are some alternatives to "i was asleep"?
Depending on the context, you could use alternatives like "i had fallen asleep", "i was napping", or "i was resting".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
1.8/5
Expert rating
Real-world application tested