Dictionary
Thesaurus
Medical
Scrabble®
Spanish Central
Browse DictionaryBrowse Thesaurus
Get our free apps!iPhone•iPad•Android
Games
Word of the Day
Video
Blog: Words at Play
My Faves
Dictionary

sunny

adjective sun·ny \ˈsə-nē\

: having plenty of bright sunlight

: cheerful and happy

sun·ni·ersun·ni·est

Full Definition of SUNNY

1
:  marked by brilliant sunlight :  full of sunshine
2
:  cheerful, optimistic <a sunny disposition>
3
:  exposed to, brightened by, or warmed by the sun <a sunny room>
— sun·ni·ly \ˈsə-nə-lē\ adverb
— sun·ni·ness \ˈsə-nē-nəs\ noun
See sunny defined for English-language learners
See sunny defined for kids
ADVERTISEMENT

First Known Use of SUNNY

14th century

Related to SUNNY

Synonyms
aglow, beaming, bright, glowing, radiant
Antonyms
dour, gloomy, glum, morose, saturnine, sulky, sullen

Rhymes with SUNNY

bunny, funny, honey, money, punny, runny, sonny, tunny
SUNNY Defined for Kids

sunny

adjective sun·ny \ˈsə-nē\
sun·ni·ersun·ni·est

Definition of SUNNY for Kids

1
:  bright with sunshine <a sunny day> <a sunny room>
2
:  merry 1, cheerful <He just kept … talking his nonstop sunny talk about what a great summer we were going to have … — Jack Gantos, Joey Pigza Loses Control>

Learn More About SUNNY

Browse

3 ENTRIES FOUND:
  1. sunny
  2. sunny side
  3. sunny-side up
Next Word in the Dictionary: sunny sidePrevious Word in the Dictionary: sunnudAll Words Near: sunny
ADVERTISEMENT
10 Charming Words for Nasty People
Put-downs with flair
Learn More
When "Literally" isn't, well, literal
How to use a word that (literally) drives some people nuts.
Watch Now
Know what this is?
Test your vocab with our fun, fast game
Go Play
Fear of cats?
Ailurophobia, and 9 other unusual fears
Learn More
Join Us
Merriam-Webster
on Facebook
Merriam-Webster
on Twitter
Bookstore: Digital and Print
Merriam-Webster references for Mobile, Kindle, print, and more.
See All
Other Merriam-Webster Dictionaries