In the context of betting, action refers to the amount of money that is wagered on a particular bet. When a bet receives action, it means that there are people willing to place bets on that specific outcome. The amount of action that a bet receives can impact the odds and the potential payout. If a bet is not receiving much action, it may indicate that it is not a popular choice among bettors or that the odds are not favorable. Conversely, if a bet is receiving a lot of action, it may indicate that many people believe it is likely to happen, which can result in lower odds and smaller payouts.