There are quite a few synonyms for the phrase "scraping by." Some common ones include "surviving," "making ends meet," "barely getting by," "living paycheck to paycheck," "tightening one's belt," "pinching pennies," "struggling financially," "eeking out a living," "existing on a shoestring budget," and "striving to make do." These expressions all suggest a difficult financial situation, where one is just barely able to cover their basic needs and expenses. They convey a sense of hardship, but also imply a certain resilience and determination to make it through tough times.