Simple Definition of sunny
: having plenty of bright sunlight
: cheerful and happy
Examples of sunny in a sentence
the sunniest parts of the country
We found a sunny place to have lunch.
If it's sunny later, we can go to the park.
First Known Use of sunny
SUNNY Defined for Kids
Seen and Heard
What made you want to look up sunny? Please tell us where you read or heard it (including the quote, if possible).