One synonym for the phrase "makes as goes along" could be improvises. This means to create or do something without prior planning or preparation, similar to making something up as one goes along. Another synonym is adapts, which suggests changing one's approach to fit the circumstances as they arise. This works well when things aren't going exactly as planned and adjustments need to be made in the moment. A third synonym is adjusts, which implies fine-tuning or tweaking a plan or action based on feedback or new information that becomes available as one progresses. These synonyms all describe the ability to be flexible and responsive in the face of changing situations.