surprisebonus
nounUK /səˈpraɪz ˈbəʊnəs/
US /sərˈpraɪz ˈboʊnəs/
A surprise bonus is an extra gift you did not expect.
The teacher gave us a surprisebonus of extra playtime on Friday.
OTHER MEANINGS
2. An unplanned reward added to a payment or prize.
The company handed out a surprisebonus to every worker at the party.
3. A hidden extra feature in a game or product.
The new game has a surprisebonus level you can unlock.
4. A pleasant extra benefit that comes with something.
Free dessert was a surprisebonus of eating at that restaurant.