Intrude (verb)

1. To enter or come into a place or situation without being invited or wanted.
2. To interfere in something that does not concern one.

Origin:

From latin intrudere, to thrust in.

Examples:

1. She felt like she was intruding on the private conversation.
2. The intruder broke into the house in the middle of the night.
3. The salesman was told that he was intruding on a private meeting.
4. The reporter felt like he was intruding on a very personal moment.
5. The neighbor was accused of intruding on the family's privacy.