Correct spelling

5th

Correct spelling, explanation: 5th is an ordinal number, which appears between 4th and 6th. It’s worth noticing that starting with the number four we add the -th ending when we want to form ordinal numbers. Therefore we have e.g. 4th, 5th, 10th, etc. Only the first three numbers differ as they are 1st, 2nd, and 3rd.

Definition of 5th:
1. ordinal number – it’s a number after 4th, its full form is fifth,
The 5th symphony by Beethoven is considered to be a true masterpiece.

Idioms with 5th:
1. a 5th wheel – it’s said about a person who isn’t needed or is ignored by everyone,
Jack has been working in this company for two months now, but he still feels like a 5th wheel.


Incorrect spelling

5st

Incorrect spelling, explanation: the majority of ordinal numbers in English are created by adding the -th ending to the number. However, the first three numbers are formed differently as we have 1st, 2nd, and 3rd. Some English users confuse it and instead of 5th they use the form 5st, which is an incorrect form.

Incorrect spelling

5nd

Incorrect spelling

Incorrect spelling

5rd

Incorrect spelling