Allin

Allin, and its common variant all-in, is a term used to describe staking everything in a single move or decision. In poker and other gambling games, an all-in bet puts all of a player's remaining chips at risk on one hand. If multiple players go all-in, the action may create side pots, and the hand is resolved by a showdown if all active players call. The term is often written as all-in, but allin appears in informal contexts and digital communications.

In broader usage, going all-in signifies a complete commitment of resources to a single venture, project, or outcome, with no opportunity to retreat without loss. It conveys high risk and potentially high reward, and it can be used in business, sports, or personal decision-making.

As a proper noun, Allin is a surname found in English-language contexts. It appears in historical records and can be related to variants such as Allen or Allan, depending on spelling conventions and locality.