Sentence examples for not eligible from inspiring English sources

"not eligible" is a correct and usable phrase in written English
It is commonly used to indicate that a person or thing does not meet the requirements or qualifications for something. Example: "You are not eligible to enter the competition if you are under 18 years old." In this sentence, "not eligible" is used to indicate that individuals under 18 do not meet the qualifications necessary to enter the competition.