trespass
Definitions
To enter the owner's land or property without permission.
To commit an offense or sin against a person or set of rules.
To encroach on someone's time, attention, or rights.
Examples
The sign clearly stated that anyone who enters the property will be prosecuted for trespass.
He did not realize he was committing a trespass when he wandered into the private garden.
The landowner warned the hikers that they were in trespass of his fenced-off acreage.