Snarled up can be described as something that is tangled, knotted or congested. The antonyms for snarled up are words that refer to organized and orderly situations. The words that can be used as antonyms for snarled up are smooth, free-flowing, unobstructed, clear, open and easy. For instance, smooth refers to something that proceeds without any obstacles, while free-flowing is used to describe something that moves freely without any interruptions. Similarly, unobstructed is used to imply something that is clear and easy to move without any hindrance. In conclusion, the antonyms for snarled up are words that describe situations that are opposite to tangled, knotted or congested.