He has proven to be an excellent and reliable teammate on a terrific Pistons team.

A very excellent and worthy person, thoroughly reliable in every particular.

We've proven you can make a consumer product with RF that is reliable.

They are proven. They rely on reliable equipment.

She was very reliable and very well organized. She was an excellent employee and did a great job.

This Soyuz rocket has proven to be very reliable and it has a very good record.