Webster's Revised Unabridged Dictionary · 1913

Interfere

Interfere , intransitive verb

[Old French entreferir to strike each other; entre between (Latin inter) + Old French ferir to strike, French férir, from Latin ferire. See Ferula.]

1.
To come in collision; to be in opposition; to clash; -- usually used with with; as, interfering claims, or commands; workers in a crowded shop may interfere with each other's activity.
2.
To enter into, or take a part in, the concerns of others; to intermeddle; to interpose; -- used with in or with; as, to interfere with the way I raise my children.
To interfere with party disputes. — Swift
There was no room for anyone to interfere with his own opinions. — Bp. Warburton
3.
To strike one foot against the opposite foot or ankle in using the legs; -- sometimes said of a human being, but usually of a horse; as, the horse interferes.
4.
(Physics) To act reciprocally, so as to augment, diminish, or otherwise affect one another; -- said of waves, rays of light, heat, etc. See Interference, 2.
5.
(Patent Law) To cover the same ground; to claim the same invention; as, to interfere with another patent.