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trespass on

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trespass (up)on something

to intrude or encroach onto a restricted or private area. (Upon is formal and less commonly used than on.) You had better not trespass upon Mr. Green's land. I wouldn't trespass on that fenced-off land!

See also: on, trespass

trespass on

v.

1. To enter wrongfully onto some land that belongs to another: We don't tolerate hunters who trespass on our property.

2. To infringe on something, such as another's privacy, time, or attention: Do not trespass on their patience by pursuing this matter any further.

See also: on, trespass