SECRET
—adjective. 1 kept or meant to be kept private, unknown, or hidden. 2 acting or operating secretly. 3 fond of secrecy. —none. 1 thing kept or meant to be kept secret. 2 mystery. 3 effective but not generally known method (what`s their secret?; the secret of success). ? in secret secretly. ? secretly adverb. [latin secerno secret- separate]