English to English

adjective (a)

• open and observable; not secret or hidden(adj.all)

  Example:
  An overt lie.
  Overt hostility.
  Overt intelligence gathering.
  

  Synonym:
  open
  Antonym:
  covert
  

  source: wordnet30
• Open to view; public; apparent; manifest.(adjective)

  source: webster1913