سِرّيّ secret; private, classified, esoteric, confidential; covert, furtive, stealthy, clandestine, surreptitious, hugger-mugger, underhand(ed), underground, undercover; hidden, veiled, dark, cryptic, mysterious, occult

سِرّيّ جِدّاً، سِرّيّ لِلْغَاية top secret

بُوِليسٌ سِرّيّ، جَلْسَةٌ سِرّيّة ـ اُنْظُرْ: بُولِيس، جَلْسَة