say it: WEL-nohn
well-known is an adjective meaning "widely or fully known". It carries 2 recorded senses.
widely or fully known
“a well-known politician”
“well-known facts”
“a politician who is well known”
“these facts are well known”
frequently experienced; known closely or intimately
“a long-familiar face”
“a well-known voice reached her ears”
Definitions, synonyms and semantic relations for well-known come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.