approval

noun3

1. •
   an official sign from someone in charge that something may be done

   • I need to get an approval on this purchase order.
2. •
   An expression of favorable acceptance and encouragement; a compliment that also condones.

   • Words of approval never seem to come from him.
3. •
   Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item.