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

Monday, rain chances leave the area, and it’s expected to be a sunny day with a high temperature near 85 degrees. — Kendrick Calfee, Kansas City Star, 15 Aug. 2026

Yellow jackets are especially active on warm sunny days in late summer and fall. — Tim Johnson, Chicago Tribune, 15 Aug. 2026

The ‘next step’ On a sunny September day last year in the Chinese port city of Ningbo, not far from Shanghai, higher-ups from shipping company Sea Legend mingled with local transport officials at a port terminal. — Simone McCarthy, CNN Money, 14 Aug. 2026

Choose a sunny spot and use a shade cloth or move the container when temperatures spike. — Karen Brewer Grossman, Southern Living, 14 Aug. 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