The opposite of "more impeded" is "less obstructed". Impediments are factors that block or slow down a process, so when something is impeded, it is hindered or delayed. Antonyms to impeded suggest that the progression is free-flowing or happening without any hindrance. These words may include, but are not limited to: unobstructed, clear, smooth, unimpeded, free, unhampered, easy, unburdened, and effortless. Thus, if you want to express the opposite of being impeded, you can use these words in your descriptions or sentences. They connote the idea of progress, and things moving forward with a minimal obstacle or hindrance.