The phrase "is attached to" can often be replaced with synonyms to convey a similar meaning. For instance, one might use the phrase "is linked to" to describe the same concept. Other good options include "is associated with," "is affixed to," "is connected to," and "is fixed to." These synonyms can make your writing more varied and interesting, while also allowing you to avoid repetition. They are useful tools for anyone looking to communicate an idea clearly and concisely. Ultimately, the choice of synonym will depend on the context and intended audience of the writing in question.