THESAURUS
slip in
admit, barge in, be admitted, break in, break in upon, breeze in, burst in, bust in, butt in, charge in, come barging in, come between, come breezing in, come busting in, come in, crash, crash in, crash the gates, creep in, cross the threshold, crowd in, cut in, drop in, ease in, edge in, elbow in, encroach, enter, entrench, foist in, gain admittance, get in, go in, go into, have an entree, have an in, hop in, horn in, impinge, impose, impose on, impose upon, infiltrate, infringe, infuse, inject, inoculate, insert, insinuate, interfere, interject, interlope, interpose, intervene, introduce, intromit, intrude, invade, irrupt, jam in, jump in, look in, obtrude, pack in, perfuse, pop in, press in, push in, put in, put on, put upon, rush in, set foot in, set in, slink in, smash in, sneak in, squeeze in, steal in, step in, stick in, storm in, take in, throng in, throw in, thrust in, trench, trespass, tuck in, visit, wedge in, whip in, work in, worm in
ROGET THESAURUS
slip in
Ingress
VB
have the entree, enter, go into, go in, come into, come in, pour into, pour in, flow into, flow in, creep into, creep in, slip into,
slip in, pop into, pop in, break into, break in, burst into, burst in, set foot on, ingress, burst in upon, break in upon, invade, intrude, insinuate itself, interpenetrate, penetrate, infiltrate, find one's way into, wriggle into, worm oneself into, give entrance to, insert.