There are several possible synonyms for the phrase "springs for." Depending on the context, some possibilities might include: purchasing, financing, funding, backing, supporting, or underwriting. For example, one might say "I need to find a way to springs for this new car I want to buy," which could be rephrased as "I need to figure out a way to finance this new car I want to buy." Similarly, one might say "Our company is springsing for a new marketing campaign," which could be rephrased as "Our company is underwriting a new marketing campaign." The specific synonym used may depend on the tone, formal or informal, or context in which the phrase is being used.