(idiomatic) A momentous matter; a very serious risk; a difficult task or situation.

(informal, vulgar) An expression of acceptance of misfortune in life.

A person's faculties, or an organization's usefulness, should not be written off simply because of age.

To frighten someone very much.

(UK, slang) Used in comparisons to indicate that someone or something is devoid of life or animation.

The most valuable things in life (e.g.: friendship, courtesy) cost nothing.

Art is more enduring than life.

To a point where one is at great risk of death; or (figuratively, hyperbolic) of severe danger or trouble. / (figuratively, hyperbolic) Almost as much as possible; to an extreme extent.

To do great injury to the enemy before being killed by them.

(transitive with for) (literary) To give one's life (for), to die (for).