interlope

[imp. & p. p. Interloped ; p. pr. & vb. n. Interloping.]
[See Interloper.]
To run between parties and intercept without right the advantage that one should gain from the other; to traffic without a proper license; to intrude; to forestall others; to intermeddle.

verb

To intervene officiously or indiscreetly in the affairs of others: butt in, horn in, interfere, meddle. See participate/abstain.

The verb has one meaning:

Meaning #1: encroach on the rights of others, as in trading without a proper license