The phrase "ball up" has a variety of synonyms that can be used to convey a similar meaning. Some of the most common synonyms for "ball up" include "muddle," "confuse," "tangle," "snarl," "mix up," and "disorder." Each of these words suggest a sense of disorganization or confusion, which is often associated with things being "balled up." Other possible synonyms for "ball up" might include "jumble," "mess up," "entangle," "complicate," or "obfuscate." Ultimately, the choice of synonym will depend on the context in which the word is being used.