Sentence examples for unknown factor from inspiring English sources

"unknown factor" is a correct and usable phrase in written English.
It is typically used to refer to something that is not yet known or understood and may have an impact on a situation or outcome. For example: "The success of the project was hindered by several unknown factors that we were unable to anticipate." In this sentence, "unknown factors" refers to things that were not known or considered beforehand but had an effect on the project's success. Another example: "The outcome of the match was influenced by an unknown factor, as the team's star player unexpectedly fell ill the night before." In this sentence, "unknown factor" refers to something that was not known at the time but had an impact on the result of the match.