Dependent upon, or appertaining to, another thing, called the principal.
Liable to happen; apt to occur; befalling; hence, naturally happening or appertaining.
Arising as the result of an event, inherent.
Coming or happening accidentally; not in the usual course of things; not in connection with the main design; not according to expectation; casual; fortuitous.
Falling on or striking a surface.
An event that causes or may cause an interruption or a crisis, such as a workplace illness or a software error.
A (relatively minor) event that is incidental to, or related to others.
An event or occurrence.
A promise to pay a sum of money in the event that another person fails to fulfill an obligation.
One who undertakes to pay money or perform other acts in the event that his principal fails therein.
A substitute; a hostage.
Evidence; confirmation; warrant.
Certainty.
That which makes sure; that which confirms; ground of confidence or security.