authenticate

"The teacher's encouraging words confirmed the student's resolve to study harder for the exam. "

"The teacher asked each student to write their signature on the permission slip. "

"Please completely fill in the box for your answer, using a number 2 pencil."

"The explanation was long and drawn-out."

"Before starting the new job, I had to complete all the necessary formalities, such as signing contracts and filling out paperwork. "

"The notary's signature served as an attestation of the document's authenticity. "

"There is not sufficient access to the internet in many small rural villages."

"The application of this cream should reduce the swelling."

"My friend studied hard for the test; therefore, she got a good grade. "

"She started conforming to her friends' fashion choices to fit in at the new school. "

"The experts confirmed it was an authentic signature."

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