Synonyms and related words :
adoption, appropriation, arrogation, assumption, entrance, entrenchment, impingement, imposition, incursion, infiltration, influx, infraction, infringement, injection, inroad, insinuation, interference, interjection, interloping, interposition, interposure, interruption, intervention, intrusion, invasion, irruption, obtrusion, overstepping, playing God, seizure, transgression, trespass, trespassing, unlawful entry, usurpation