1. (n.) The act placing, or coming between; intervention.
2. (n.) The thing interposed.
Thesaurus Entries
encroachment, entrance, entrenchment, impingement, imposition, incursion, infiltration, influx, infringement, injection, inroad, insinuation, interagency, intercession, interference, interjection, interloping, intermediation, interposure, interruption, intervention, intrusion, invasion, involvement, irruption, mediation, obtrusion, stepping in, trespass, trespassing, unlawful entry
