sunny

adjective

sun·​ny ˈsə-nē 

sunnier; sunniest

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

sunnily

ˈsə-nə-lē 

adverb

sunniness

ˈsə-nē-nəs 

noun

Synonyms of sunny

• bright
• cheerful
• radiant
• smiling

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.

Recent Examples on the Web

Tuesday brings mostly sunny skies to partly cloudy skies and milder weather to the Philadelphia region, with highs in the mid to upper 40s. —Andrew Kozak, CBS News, 13 Jan. 2026

Despite hundreds of days of being overlooked by potential adopters, Percy still has a sunny, optimistic personality. —Kelli Bender, PEOPLE, 12 Jan. 2026

North Texans should keep their coats and scarves at the ready with a chilly but sunny start to the week. —Elissa Jorgensen, Dallas Morning News, 12 Jan. 2026

Wednesday should be the warmest day of the week, with highs reaching about 70 degrees under mostly sunny skies. —Newsroom Meteorologist, Austin American Statesman, 12 Jan. 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing sunny

• sunny-side up

Rhymes for sunny

• bunny
• funny
• gunny
• honey
• money
• runny
• sonny
• tunny

Kids Definition

sunny

adjective

sun·​ny ˈsən-ē 

sunnier; sunniest

1

: bright with sunshine

2

: merry sense 1

a sunny smile

sunnily

ˈsən-ᵊl-ē 

adverb

sunniness

ˈsən-ē-nəs 

noun