There are several synonyms that can be used in place of the phrase "wormed into". One such synonym is "sneaked into", which implies a stealthy entry or infiltration. Another option could be "penetrated", which emphasizes a forceful or determined effort to gain access. Additionally, "infiltrated" could be used to suggest a gradual and subtle entry. Other potential synonyms might include "snaked into", "crept into", or "slipped into". Ultimately, the choice of synonym will depend on the specific context in which it is being used and the desired connotations of the phrase.