moderate weather; suitable for outdoor activities
"The forecast promised sunshine, making it the perfect day to have a picnic in the park."
the quality of being cheerful and dispelling gloom
"flowers added a note of cheerfulness to the drab room"
The direct rays, light or warmth of the sun.
"The warm sunshine dried the wet grass in minutes."
In plain English: Sunshine is bright light and warmth from the sun that makes you feel happy when it shines on your skin.
"The sunshine made the cold winter day feel warm and pleasant."
Usage: Use sunshine as a noun when referring to sunlight or warm weather, but reserve its adjective form for situations involving transparency and open public access. Avoid confusing this specific usage with other terms that might imply hidden agendas in closed-door meetings.
Open to and permitting public access, especially with regard to activities that were previously closed-door or back-room meetings.
"The new policy ensures that all committee decisions are made in sunshine so the public can trust the process."
"The sunshine disposition made everyone feel welcome at the party."
A surname.
"The local news reporter named Sunshine received an award for her investigative work on community issues."
Sunshine entered Middle English around 1250 from the words for "sun" and "shine," appearing in the Coverdale Bible of 1535 to describe sunlight. While this modern compound meaning was established early, an isolated Old English form once referred specifically to a mirror rather than light.