definitive

"The teacher explicitly stated the rules for the school project, leaving no room for misunderstanding. "

"The teacher pointed out a particular detail in the math problem that several students missed. "

"I checked the list again and everything is done."

"The detective's investigation yielded conclusive evidence that the suspect was at the scene of the crime. "

"a successful use of medicine;  a successful experiment;  a successful enterprise"

"The teacher asked us to sort the coins into different denominations, like pennies, nickels, and dimes. "

"The authoritative rules in this school come not from the headmaster but from the aged matron."

"The fence is determining the boundary between our yard and our neighbor's. "

"In English grammar lessons, students learn that articles like "the" and demonstratives like "this" and "that" are called definitives because they specify which thing is being talked about. "

"The museum gift shop sold a commemorative celebrating the city's 100th anniversary. "

"The presentation about the new school rules was very clear and easy to understand. "

"In the sentence, "This book is mine," the word "this" is a demonstrative that points to a specific noun. "