Incorrect spelling, explanation: fifth is the correct and standard spelling in English. It is universally recognized and understood. Fith is not a recognized spelling and is considered incorrect. The spelling fifth accurately represents the pronunciation /fɪfθ/. The fth cluster at the end captures the correct sounds made when the word is spoken. Fith omits an important consonant sound, which can lead to incorrect pronunciation. Using the correct spelling fifth ensures clear communication. Incorrect spelling can lead to confusion or misunderstanding, especially in written communication.

Correct spelling, explanation: the etymology of the word fifth reveals its historical development and its relation to the number five. It comes from the Old English word fīfta, which means the fifth one. This term itself is derived from fīf, the Old English word for five. The spelling fifth accurately reflects this historical lineage and the phonetic development of the word. The inclusion of the -f sound before the th (creating the fth cluster) is consistent with the word’s etymology and pronunciation. In contrast, fith does not have a historical basis or etymological justification. It is not a recognized or standard spelling in English and does not reflect the phonetic and morphological development of the word.

Definition of fifth:
Number, an ordinal form of the number five, indicating position or order in a sequence
He celebrated his fifth birthday with a big party and a superhero-themed cake.
The musicians harmonized perfectly, hitting the fifth note of the scale with precision.

Collocations with fifth:
Some of the most commonly used collocations include:
1. Fifth place: a ranking or position that is fifth in order.
Despite her hard work, she finished in fifth place in the competition.
2. Fifth generation: refers to the latest iteration or version, often used in the context of technology or family lineage.
The fifth generation of the smartphone features advanced AI capabilities.
3. Fifth year: a term often used to describe a period or status, such as in education or employment.
She is now in her fifth year as a software engineer at the company.
4. Fifth gear: the highest gear in many vehicles, used for high-speed driving.
He shifted into fifth gear as he merged onto the highway.