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Learn why "21st" is the correct and preferred way to write the ordinal number of 21, and why "21th" is an incorrect and unacceptable form. See examples, definitions, and usage tips for this irregular ordinal number.
Mar 3, 2024 · Learn why "21st" is the correct way to write the ordinal number for "21" and not "21th". Find out the historical and linguistic reasons behind this irregular form and see some examples of its usage.
May 21, 2023 · Learn the difference between '21th' and '21st', and why '21st' is the correct way to write the ordinal number for twenty-first. Find out the rules, definitions, examples, and pronunciation of ordinals.
Mar 1, 2024 · Learn how to use ordinal numbers correctly with examples and exceptions. The correct way to write the 21st day of the month is "21st", not "21th".
Oct 6, 2022 · Learn the rules and examples of ordinal numbers, such as 21st, 22nd, and 23rd. Find out the difference between ordinal and cardinal numbers and when to use them in writing and speaking.
Learn why 21th is a mistake and the correct form is 21st. Find out the definition, usage, and examples of the ordinal number 21st in English.
When writing ordinal numbers such as 1st, 2nd, 3rd, etc. you should use the last two letters on the word as it would be if you wrote out the whole word. Below are the ordinal numbers both written out and with digits for 1-20. fir st 1st. seco nd 2nd. thi rd 3rd. four th 4th. fif th 5th. six th 6th. seven th 7th.
