(idiomatic) An occupation, role, social class, or lifestyle.

(idiomatic, intransitive, derogatory) To begin having a more interesting, eventful, or worthwhile existence.

The length of time a product (especially food and drugs) will last without deteriorating or without being sold.

Life outside of a contrived or fantastical environment; often used in comparison to events depicted in drama. / (by extension, sometimes capitalized) Life outside the Internet.

Something that cannot be avoided.

An individual's interpersonal relationships with people within their immediate surroundings or general public. / Those public activities performed in association with others for the purpose of pleasure.

That is the way things happen / Certain things cannot be changed, helped or improved; struggle and objection are pointless.

(of a person) The amount of time one is expected to live. / (figuratively, by extension, of an idea or an object) The amount of time something is expected to last.

(idiomatic, UK) Mouth-to-mouth resuscitation.

(idiomatic, chiefly UK and Ireland) The real world as a source of instruction, as opposed to a formal education.