Noah Webster
Intrusion
INTRU'SION,noun s as z. [Latin intrusio, from intrudo.]
1. The action of thrusting in, or of entering into a place or state without invitation, right or welcome. The company may be disturbed by the intrusion of an unwelcome guest.
--Many excellent strains which have been jostled off by the intrusions of poetical fictions.
Why this intrusion?
Were not my orders that I should be private?
2. Encroachment; entrance without right on the property or possessions of another.
3. Voluntary entrance on an undertaking unsuitable for the person.