zabaglioneEnglishMerriam-Webster Dictionary//xlookup/covert'>covertsilent, unadvertised, unannounced, undisclosed, unmentioned, unsaid, untoldfurtive, hugger-mugger, occult, sneak, sneaking, sneaky, stealthy, surreptitious, undercover, underground, underhand, underhandedclassified, restricted, top secretpersonalcovertsilent, unadvertised, unannounced, undisclosed, unmentioned, unsaid, untoldfurtive, hugger-mugger, occult, sneak, sneaking, sneaky, stealthy, surreptitious, undercover, underground, underhand, underhandedclassified, restricted, top secretpersonal