Synonyms for Ravel (same or very similar meaning)
WordNet sense 1 (French composer and exponent of Impressionism (1875-1937)):
Maurice RavelWordNet sense 2 (a row of unravelled stitches):
ladder, runWordNet sense 3 (disentangle):
unravel, ravel outWordNet sense 4 (tangle or complicate):
knot, tangleFrom the ODE community, based on WordNetadd/edit