intrude

To intrude means to enter, interfere with, or interrupt something without being welcome or invited. It suggests an unwelcome entry into someone's space, privacy, or activities. For example: "The paparazzi constantly intruded on the celebrity's private life," meaning they interfered with her privacy.

Intrusion isn't always about physical spaces. You can intrude upon a conversation by interjecting an irrelevant comment, or intrude upon someone's thoughts by bringing up a painful memory. It carries a sense of disruption and often implies a lack of respect for boundaries.

The word comes from the Latin "intrudere," meaning "to push into." Think of it as pushing yourself where you don't belong. Sometimes an intrusion is minor, like accidentally interrupting someone, but it can also be serious, like illegally entering private property.

So whether it's a physical space, a conversation, or someone's peace of mind, to intrude is to enter or interfere in an unwelcome and disruptive way.