When we use the phrase "sucked it up," we usually mean that we endured or tolerated a difficult situation without complaining or giving up. However, there are many other ways to express this same sentiment depending on the context or the tone we want to convey. Some synonyms for "sucked it up" could include "soldiered on," "persevered," "made do," "survived," "endured," "weathered the storm," "gritted my teeth," or "kept my chin up." Of course, the exact phrasing might depend on the particular situation, but these options offer some alternatives that convey a sense of resilience and determination in the face of adversity.