v.1. To become tangled in or as if in a knot: This new fishing line keeps snarling up.
2. To tangle or knot something: The wind snarled up my hair. I snarled the kite up in a tree.
3. To involve someone or something in or as if in a tangle: Their lawyers snarled us up in litigation for years. Don't get me snarled up in your affairs. An accident snarled up traffic for hours.