"Covertly" is a word in ENGLISH

Private; indirect; secret; intriguing; -- as if finding access by the back stairs.

Private end or interest; secret purpose; selfish advantage.

A number of persons united in some close design, usually to promote their private views and interests in church or …

A private alphabet, system of characters, or other mode of writing, contrived for the safe transmission of secrets; also, a …

privately; secretly.

Conducted with secrecy; withdrawn from public notice, usually for an evil purpose; kept secret; hidden; private; underhand; as, a clandestine …

Secretly; privately.

A private meeting; a close or secret assembly.

Private conversation; (pl.) secrets shared; as, there were confidences between them.

A secret opinion or purpose; a private matter.

Covered over; private; hid; secret; disguised.

To stand under the eaves, near a window or at the door, of a house, to listen and learn what …

The habit of lurking about dwelling houses, and other places where persons meet fro private intercourse, secretly listening to what …

A private matter; a secret.

A secret message; a personal unofficial communication.

Sequestered from company or observation; appropriated to an individual; secret; secluded; lonely; solitary; as, a private room or apartment; private …

Not publicly known; not open; secret; as, a private negotiation; a private understanding.

Having secret or private knowledge; privy.

In a privy manner; privately; secretly.

A private matter or business; a secret.