When it comes to finding a suitable synonym for the word 'locker', there are a number of options available. Some of the most common alternatives include 'cabinet', 'cupboard', 'safe', 'vault', 'box', 'chest', 'wardrobe', 'drawer', and 'compartment'. Each of these words refers to a secure container or storage unit that is typically used to store valuables, clothing, or documents. While each of these words can be used interchangeably with 'locker' in certain contexts, they each have their own connotations and nuances that may make them more or less appropriate depending on the situation at hand.