Sentence examples for by a certain from inspiring English sources

The phrase "by a certain" is correct and usable in written English
It is typically used to indicate that something or someone is known or specified, but not mentioned explicitly. It can also be used to add a sense of vagueness or uncertainty. Example sentence: "The decision was made by a certain member of the committee." (indicating that a specific person made the decision, but their identity is not being revealed) Other examples: - "The article was written by a certain journalist who prefers to remain anonymous." - "The company was founded by a certain group of investors." - "By a certain age, most children have learned to tie their shoelaces." (indicates a general age range, without stating a specific age)