privately Synonyms

in private in camera out of the public eye on the qt off the record in confidence surreptitiously secretively discreetly conspiratorially clandestinely between ourselves behind closed doors in secret sub-rosa on the quiet on the side out of public view between us in one's heart by stealth voyeuristically unofficially unobtrusively unobserved under the counter under cover subjectively undercover sneakily on the sly backstage deep down at heart intimately internally interiorly instinctively inside inofficiously informally individually furtively familiarly esoterically covertly confidentially characteristically intuitively inwardly