Double happiness: refers to two happy events coming together.

Synonym: double happiness

Antonym: To make matters worse, it never rains but it pours.

Make sentences:

1, the new house has just been completed, and it is reported that my daughter has been admitted to college. It's a double happiness, icing on the cake!

2. Red is the color of double happiness, symbolizing happy moment, auspiciousness, enthusiasm and prosperity.