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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
that's odd
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that's odd" is grammatically correct and can be used in written English
It is typically used to express surprise or disbelief at something unusual or unexpected. Example: "I just saw a pig flying in the sky." Response: "That's odd. Pigs don't usually fly."
✓ Grammatically correct
News & Media
Alternative expressions(3)
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
55 human-written examples
Here's something else that's odd about Ms. Montague -- she speaks with an American accent but was raised in England.
News & Media
"This is just one thing that's odd about the Weinstein affair," he continued.
News & Media
Okay that's odd since he has the disc in the tray.
News & Media
Jenna says, "Oh that's odd".
News & Media
That's odd, the shelter's director, Father Patrick Murphy, remembers thinking.
News & Media
You'd be forgiven for thinking that's odd, considering two of Facebook's attempts at standalone apps failed.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
5 human-written examples
"So that was odd to me.
News & Media
"Ah, that was odd for us, man.
News & Media
It is not the data that are odd.
News & Media
"Some kind of thing that was odd or weird".
News & Media
The fact implies that is odd.
Expert writing Tips
Best practice
Use "that's odd" to express mild surprise or confusion when encountering something unexpected, but avoid overusing it, as it can sound repetitive. Vary your expressions to maintain reader engagement.
Common error
Avoid using "that's odd" in situations requiring a stronger expression of concern or alarm. For serious issues, more direct and forceful language is necessary.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that's odd" functions as an interjection or a commentary phrase, used to express a reaction of mild surprise, confusion, or disbelief. Ludwig examples show its use in response to unexpected or peculiar situations, such as a door being unlocked or a person's behavior.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
In summary, "that's odd" is a grammatically correct and commonly used phrase to express mild surprise or confusion. Ludwig's examples highlight its frequent appearance in news and media contexts, indicating its suitability for neutral to informal communication. While versatile, it's essential to consider the strength of the expression and opt for more direct language when addressing serious concerns. The AI confirms its grammatical correctness and typical usage, providing a solid foundation for confident and appropriate use.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
That's peculiar
Replaces "odd" with "peculiar", suggesting something is strange or unusual.
That's strange
Substitutes "odd" with "strange", implying something deviates from the norm.
That's unusual
Replaces "odd" with "unusual", indicating something is not typical or common.
That's weird
Replaces "odd" with "weird", conveying a sense of something being bizarre or unsettling.
That's funny
Uses "funny" to suggest something is odd or causes one to pause and consider.
That's curious
Substitutes "odd" with "curious", implying something is interesting and prompts further investigation.
How strange
Rephrases the expression as a question emphasizing the strangeness of something.
That's off
Replaces "odd" with "off", indicating something is not quite right or deviates from the standard.
That's unexpected
Substitutes "odd" with "unexpected", conveying that something was not anticipated.
That's remarkable
Replaces "odd" with "remarkable", implying something is noteworthy and unusual.
FAQs
How can I use "that's odd" in a sentence?
You can use "that's odd" to express mild surprise or confusion. For example, "I thought I locked the door, but it's open. "That's odd"."
What are some alternatives to "that's odd"?
Alternatives include "that's strange", "that's peculiar", or "that's unusual" depending on the context.
Is "that is odd" grammatically different from "that's odd"?
"That is odd" and "that's odd" have the same meaning. The latter is a contraction of the former and is more informal.
When is it inappropriate to say "that's odd"?
It may be inappropriate to say "that's odd" in situations that require a more serious or empathetic response. For instance, if someone shares a significant problem, expressing stronger concern would be more suitable.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested