Interloped means to intrude or meddle in a situation where one is not welcome or required. There are a variety of words that can be used as synonyms for interloped, including interjected, inserted, interrupted, intervened, obtruded, and encroached. Each of these words carries a slightly different connotation and can be used in different contexts based on the situation at hand. However, all of these words suggest a level of unwanted intrusion into a space or situation that is not welcome or warranted. Using these synonyms can help to add variety and depth to one's writing, depending on the tone and purpose of the text.