Interlope is a word that means to interfere or meddle in somebody else's affairs without permission. It is mostly associated with some form of illegality, invasion of privacy, or intrusion. Some synonyms for interlope that comes to mind are intercede, interrupt, encroach, trespass, intervene and intrude. Other less common synonyms include obtrude, butt in and meddle. Each of these words represents an action where a person is meddling in someone else's affairs or business, causing unnecessary disruption or annoyance. When used correctly, these synonyms can be useful in helping one to articulate fully the extent of interference or intrusion in a given situation.