I received a confirming email for my appointment.

This theory is confirmable through experimentation.

He confirms his attendance to the meeting.

The confirmability of the data is crucial for the validity of the research findings.

The test results were confirmative.

The confirmator verified the authenticity of the document.

This is confirmational evidence of his guilt.

The confirmance of the appointment was received via email.

The confirmators have approved the decision.

He comfortably completed the task ahead of schedule.