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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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thirty-oneth

Grammar usage guide and real-world examples

USAGE SUMMARY

'thirty-oneth' is not a correct or usable word in written English.
You might mean 'thirty-first' instead, which is the correct form of the word. For example: On January 31st, I attended the thirty-first annual gala.

⚠ May contain grammatical issues

Human-verified similar examples from authoritative sources

Similar Expressions

60 human-written examples

2nd runner- 4th fastest (slowest) runner.

Prithee, forgeteth the fake fakirs and get oneth with the story.

"He talketh stupid to letteth you know that though he iseth a well-educated Indian, he iseth stilleth a native and canneth never be oneth of us".

12th & 13th Streets last week.

News & Media

The New Yorker

52nd & 58th Streets.

News & Media

The New Yorker

2nd and 3rd Avenues.

News & Media

The New Yorker

11th & 12th Avenues.

News & Media

The New Yorker

10th last.

News & Media

The New Yorker

& 27th Street.

News & Media

The New Yorker

30th issue.

News & Media

The New Yorker

5th & Madison.

News & Media

The New Yorker
Show more...

Expert writing Tips

Best practice

Always use "thirty-first" instead of "thirty-oneth". The latter is not a recognized ordinal number in English.

Common error

Avoid creating ordinal numbers by simply adding "th" to the cardinal number. For numbers ending in one, two or three use "-st", "-nd", "-rd" respectively (e.g., "first", "second", "third", "thirty-first", "thirty-second", "thirty-third").

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

60%

Authority and reliability

1.2/5

Expert rating

Real-world application tested

Linguistic Context

"Thirty-oneth" is intended to function as an ordinal number, indicating a position in a sequence. However, as noted by Ludwig AI, it is grammatically incorrect and not recognized in standard English.

Expression frequency: Missing

Frequent in

Science

0%

News & Media

0%

Formal & Business

0%

Less common in

Science

0%

News & Media

0%

Formal & Business

0%

Ludwig's WRAP-UP

In summary, "thirty-oneth" is an incorrect formation of the ordinal number for thirty-one. As highlighted by Ludwig AI, the correct form is "thirty-first". The phrase is absent from standard English corpora and authoritative sources, indicating it should not be used in either formal or informal contexts. Always use "thirty-first" to correctly express the ordinal position.

FAQs

How do you correctly write the ordinal form of thirty-one?

The correct way to write the ordinal form of thirty-one is "thirty-first". "Thirty-oneth" is not a recognized form.

What is the difference between "thirty-first" and "thirty-oneth"?

"Thirty-first" is the correct ordinal number indicating the position after thirtieth. "Thirty-oneth" is not a valid word in English.

Can I use "thirty-oneth" in any context?

No, "thirty-oneth" is not grammatically correct and should not be used in any formal or informal context. Use "thirty-first" instead.

Are there any alternative ways to say "thirty-first"?

While "thirty-first" is the standard ordinal form, you can rephrase it as "the thirty-first item" or "the thirty-first day" depending on the context. However, it’s important to always use the correct ordinal form of "thirty-first".

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Source & Trust

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Authority and reliability

1.2/5

Expert rating

Real-world application tested

Most frequent sentences: