disorder or confusion; muddle.

secrecy; reticence

Why is there such hugger-mugger about the scheme?

secret or clandestine.

disorderly or confused.

to keep secret or concealed; hush up.

to act secretly.

noun

clandestineness , clandestinity , concealment , covertness , huggermuggery , secretiveness , secretness

adjective

clandestine , cloak-and-dagger , covert , sub rosa , undercover

adverb

clandestinely , covertly , sub rosa