"Foot the bill" is a commonly used phrase that refers to paying the full cost of something. However, there are several synonyms for this phrase. One could use "shoulder the expenses," "bear the cost," "cover the charges," "pay for it all," "pick up the tab," or "carry the financial burden." These phrases can be used interchangeably with "foot the bill" in order to add variety to your language. No matter which phrase you choose to use, the meaning remains the same - one person or party is taking on the responsibility of paying for something in its entirety.