Se•cret /'sēkrit/ Adjective 1. Not known or seen or not meant to be seen or known by others "How did you guess I had a secret plan?" Synonyms: confidential, top secret, classified, unknown, private under wraps 2. Something that is kept or meant to be kept unknown or unseen by others "A state secret" Synonyms: confidential matter, confidence, private affair, skeleton in the closetAll Rights Reserved