Concealment; the condition of being secret or hidden. / The habit of keeping secrets.

Having an inclination to secrecy

Relating to secretion

The act of seceding.

The right of an airliner of one country to land in another country for technical reasons such as refueling and maintenance.

A section formed by a plane cutting through an object, usually at right angles to an axis. / (mathematics, statistics) A sample meant to be representative of a whole population.

(US, idiomatic) After reconsidering; on further consideration.

(idiomatic) To change one's opinion, or be uneasy about a previous decision.

(idiomatic) A mindset, skill, or type of behavior so ingrained through habit or practice that it seems natural, automatic, or without a basis in conscious thought.

plural of second