Widely means over a large area or among many people. Widely known, widely read, travel widely.
It usually reports agreement or reach without naming anybody, which is why widely believed and widely reported deserve a second look: they can mean everybody thinks so or that the writer would rather not say who does.
1adverbwidelyOver a large area or among many people.
“English is widely spoken in the Netherlands.”
widely is a degree.
Wide plus -ly, from Old English wid, broad.
Middle English
wijdly
English, today
widely
From Middle English wijdly, equivalent to wide + -ly.
Etymology from Wiktionary, CC BY-SA