The antonyms for the word "unravel" are a bit tricky because they depend on the context in which the word is used. If we take "unravel" to mean "to disentangle or solve a problem," then its antonyms might be phrases like "complicate," "muddle," "confuse," or "obscure." Conversely, if we take "unravel" to mean "to undo or undo," then its antonyms might include "fasten," "secure," "tie," or "bind." Depending on the context, other possible antonyms for "unravel" might include "create," "organize," "assemble," or "construct.