necessary >> ˈnɛsəs(ə)ri
Definition: [adjective] needed to be done, achieved, or present; essential.
Example: they granted the necessary planning permission
Definition: [adjective] determined, existing, or happening by natural laws or predestination; inevitable.
Example: a necessary consequence
Definition: [noun] the basic requirements of life, such as food and warmth.
Example: not merely luxuries, but also the common necessaries