encroachment (n.)
- adoption
- appropriation
- arrogation
- assumption
- entrance
- entrenchment
- impingement
- imposition
- incursion
- infiltration
- influx
- infraction
- infringement
- injection
- inroad
- insinuation
- interference
- interjection
- interposition
- interruption
- intervention
- intrusion
- invasion
- irruption
- seizure
- transgression
- trespass
- usurpation