transitive verb intruded -·trud′ed, intruding -·trud′·ing

1. to push or force (something in or upon)
2. to force (oneself or one's thoughts) upon others without being asked or welcomed
3. Geol. to force (liquid magma, etc.) into or between solid rocks

Etymology: L intrudere < in-, in + trudere, to thrust, push: see threat

intransitive verb