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

It’s based around a sunny yellow gradient look that lends in pink throughout the branding and synthetic overlays. — Riley Jones, Footwear News, 25 July 2026

There’s no need to worry about your baby on a sunny day with the sun canopy providing UV50 sun protection. — Bestreviews, Mercury News, 24 July 2026

Heat wave headed for Kansas City Saturday is forecast to be mostly sunny with a high temperature in the low 90s. — Kendrick Calfee, Kansas City Star, 24 July 2026

For 30-plus years, Cataldi anchored Philadelphia’s morning sports talk radio show, his daily dose of unfiltered honesty giving voice to a fan base that could never be accused of being a little bit sunny. — Dana O’Neil, CNN Money, 24 July 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