noun which may take the genitive case particle 'no', taru-adjective, adverb taking the 'to' particle
Describes actions or states that are done openly without concealment, often with a nuance of boldness or defiance. Commonly used as 公然と (adverbially) or 公然の (attributively).
彼は会議で公然と反対意見を述べた。
He openly expressed his opposing opinion at the meeting.
それは公然の秘密だ。
That is an open secret.