공공연히 + verb; 공공연한 + noun
openly, publicly, without hiding
Example
그 회사의 문제는 업계에서 공공연히 알려져 있어요.
That company's problems are openly known in the industry.
Word parts
공 public+공 public+연 so, -ly
Literally 'public, public-ly': done right out in the open.
Related words