If something is rosy, it is pink or red like a rose. Also, if a situation is rosy, it is very good and happy.
The word rosy can make people think of flowers, love, or good things happening.
Examples:
The sky is rosy at sunset.
She has a rosy dress.
The rosy cheeks of the baby are so cute.
The rosy balloon floated in the air.
In the land of candy, everything is rosy and sweet.
The rosy picture made her smile.