divulge

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To make known (something private or secret).
• transitive verb Archaic To proclaim publicly.

from The Century Dictionary.

• To make public; send or scatter abroad; publish.
• Specifically To tell or make known, as something before private or secret; reveal; disclose; declare openly.
• To declare by a public act; proclaim.
• To impart, as a gift or faculty; confer generally.
• Synonyms To let out, disclose, betray, impart, communicate.
• To become public; be made known; become visible.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb rare To become publicly known.
• transitive verb To make public; to several or communicate to the public; to tell (a secret) so that it may become generally known; to disclose; -- said of that which had been confided as a secret, or had been before unknown.
• transitive verb rare To indicate publicly; to proclaim.
• transitive verb To impart; to communicate.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To make public; to several or communicate to the public; to tell (a secret) so that it may become generally known; to disclose; -- said of that which had been confided as a secret, or had been before unknown; as, to divulge a secret.
• verb To indicate publicly; to proclaim.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb make known to the public information that was previously known only to a few people or that was meant to be kept a secret