Something not understood or known.
Private seclusion.
A piece of knowledge that is hidden and intended to be kept hidden.
The key or principle by which something is made clear; the knack.
A form of steel skullcap.
Any prayer spoken inaudibly and not aloud; especially, one of the prayers in the Tridentine Mass, immediately following the "orate, fratres", said inaudibly by the celebrant.
To make or keep secret.
To hide secretly.
Being or kept hidden.
A declaration or remark.
A presentation of opinion or position.
An instruction in a computer program, especially one that returns no value, as opposed to a function call.
A document that summarizes financial activity.
To provide an official document of a proposition, especially in the UK a Statement of Special Educational Needs.