Also found in: Thesaurus, Medical, Financial, Idioms, Encyclopedia, Wikipedia.


adj. sun·ni·er, sun·ni·est
1. Exposed to or abounding in sunshine: a sunny room.
2. Cheerful; genial: a sunny smile.

sun′ni·ly adv.
sun′ni·ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sunniness - lightness created by sunlight
lightness, light - the visual effect of illumination on objects or scenes as created in pictures; "he could paint the lightest light and the darkest dark"
cloudlessness - the lightness of a sunny day when there are no clouds in the sky
2.sunniness - the quality of being cheerful and dispelling gloom; "flowers added a note of cheerfulness to the drab room"
attribute - an abstraction belonging to or characteristic of an entity
disposition, temperament - your usual mood; "he has a happy disposition"
good-humoredness, good-humouredness, good-naturedness, good-temperedness - a cheerful willingness to be obliging
ظُهور الشَّمْس
masser af solskin
sólríki; glaîværî
güneşli olma


(san) noun
1. the round body in the sky that gives light and heat to the earth. The Sun is nearly 150 million kilometres away from the Earth.
2. any of the fixed stars. Do other suns have planets revolving round them?
3. light and heat from the sun; sunshine. We sat in the sun; In Britain they don't get enough sun; The sun has faded the curtains.
verbpast tense, past participle sunned
to expose (oneself) to the sun's rays. He's sunning himself in the garden.
ˈsunless adjective
without sun, or lacking sunlight. a sunless room.
ˈsunny adjective
1. filled with sunshine. sunny weather.
2. cheerful and happy. The child has a sunny nature.
ˈsunniness noun
ˈsunbathe verb
to lie or sit in the sun, especially wearing few clothes, in order to get a suntan.
ˈsunbeam noun
a ray of the sun.
ˈsunburn noun
the brown or red colour of the skin caused by exposure to the sun's rays.
ˈsunburned, ˈsunburnt adjective
sunburnt faces.
ˈsundial noun
a device, usually in a garden, for telling time from the shadow of a rod or plate on its surface cast by the sun.
ˈsundown noun
(especially American) sunset.
ˈsunflower noun
a type of large yellow flower with petals like rays of the sun, from whose seeds we get oil.
ˈsunglasses noun plural
glasses of dark-coloured glass or plastic to protect the eyes in bright sunlight.
ˈsunlight noun
the light of the sun. The cat was sitting in a patch of sunlight.
ˈsunlit adjective
lighted up by the sun. a sunlit room.
ˈsunrise noun
the rising of the sun in the morning, or the time of this.
ˈsunset noun
the setting of the sun, or the time of this. the red glow of the sunset.
ˈsunshade noun
a type of umbrella for sheltering a person from the sun; a parasol.
ˈsunshine noun
1. the light of the sun. The children were playing in the sunshine.
2. cheerfulness or happiness.
ˈsunstroke noun
a serious illness caused by being in very hot sunshine for too long.
ˈsuntan noun
a brown colour of the skin caused by exposure to the sun. I'm trying to get a suntan.
catch the sun
to become sunburnt.
under the sun
in the whole world. I'm sure that he must have visited every country under the sun.
References in classic literature ?
And Comrade Ossipon raised his bowed head, beloved of various humble women of these isles, Apollo-like in the sunniness of its bush of hair.
Waters writes with typical Australian sunniness and uses stories from families (including her own) and educators to illustrate her points.
Ebersole's Arden is all sunniness and good cheer, but her riches are too nouveaux to enable full entry into the social stratosphere she courts.
The hit TV show Downton Abbey, which covers roughly the same time period and offers some of the same pleasures, was sharply criticized for the unwarranted sunniness with which its noble family accepted Lady Rose's marriage to Atticus Aldridge, the scion of a wealthy Jewish family.
The sunniness of DeHaan's face gives no sense of Dean's intensity.
Another of the rooms in the hotel uses yellow to enhance the sunniness, through curtains and cushions in a warm tone of yellow.
Given that Mason has only recently emerged from a long battle with depression, what's astonishing is its sunniness.
The book perhaps overemphasizes FDR in the long opening chapter and makes an uncertain pivot from the political arena--in which optimism might be generated more by substance, for example, through New Deal programs than by style--to the purely stylistic sunniness of Shirley Temple's movies.
I wondered about a change in the very psychology and identity of a country once famous for its sunniness about tomorrows.