well-known

adjectives

widely or fully known
"a well-known politician"; "well-known facts"; "a politician who is well known"; "these facts are well known"
well-known
is similar to
apprehended with certainty
"a known quantity"; "the limits of the known world"; "a musician known throughout the world"; "a known criminal"
known
frequently experienced; known closely or intimately
"a long-familiar face"; "a well-known voice reached her ears"
long-familiar, well-known