1. having the most sunshine; brightest or most filled with sunlight
Usage: superlative form of sunny
2. most cheerful, optimistic, or pleasant in disposition
Usage: superlative form of sunny; figurative use

Examples

• California is known for having some of the sunniest weather in the country.
• The kitchen is the sunniest room in our house.
• She has the sunniest personality of anyone I know.
• This has been the sunniest week we’ve had all month.
• Even on her worst days, Maria maintains the sunniest outlook.
• The sunniest spot in the garden is perfect for growing tomatoes.