"Cold feet" is a common expression that refers to a feeling of anxiety or hesitation, especially before a significant event or decision, such as a wedding. It often describes the moment when someone starts to doubt their choice or commitment, leading to second thoughts about going through with it. The phrase is frequently used in the context of relationships, where one partner may feel uncertain about taking the next step. This feeling can arise from various factors, including fear of change, pressure from family or friends, or concerns about compatibility with their partner, such as in the case of marriage.