flagrantly Antonyms

adorably collusively conspiratorially discreetly on the q.t. on the qt on the side on the sly unassailably under the counter unimpeachably unobserved behind one's back in a quiet way in a secret in a secretive manner clandestinely behind someone's back behind closed doors calmly confidentially covertly deliberately furtively privately privily quietly secretly slyly stealthily warily sub-rosa in secret in private in a secretive way